Your side of the computer repair experts

general computer restart failure occurs because of inadequate power supply, electricity power supply voltage instability caused by abnormal, or computer peripherals, a circuit failure and other reasons. However, the author of this encounter is caused motherboard Restart the fault.
Configuration: Jetway P4 MFM motherboard, 256MB of modern DDR, 40GB Seagate Barracuda, HASEE 7900Ti 64MB DDR, the Great Wall 300W P4 power supply. Fault phenomenon: a new client with the computer, the computer will sometimes restart, says no time, sometimes turn on the restart, and sometimes do not use one day resume.
Troubleshooting: author to check the client’s home computer use for an afternoon and no reboot. Estimated that computer hardware without any problems, but still re-install the system for customers, and upgraded anti-virus software. But not long after, the customer has called to say , still the same, I judge this situation is likely to be customers of the power line problems at home. I originally encountered this question: If the computer and refrigerators, air conditioners and other appliances used regularly start a line, when the Electric start, will produce close to 10 times their normal working hours of current, when the line voltage will be decreased. When less than 170V, the computer will restart.
Also, if the customer into the family household lines are poor contact situation, when the appliances to work long hours, there are virtual take place because of large contact resistance will be heat, when heat accumulation to a certain extent, the contact with the wire thermal expansion of the moment will be separated from the phenomenon of time will produce restart. For these reasons, I went to a client’s own way even when had brought a UPS power supply, carefully check the line, the computer is a separate power lead authors estimate there should be no problem. failure phenomenon occurs because there is no law, and finally put to use UPS to the customer left.
The next morning a work, the customer is still there on the phone restart. No way, I sent to the company disassemble the computer check, the motherboards, graphics cards, power supply, hard drives one by one on the test bench for testing. Test, the author no intention of moving up your power line, the host immediately restarted. I found that as long as the manual about using the power lines, computer will restart. Last careful examination, found P20ATX foot outlet Power-on foot with the motherboard then there exists a tin plate, There is a slight crack ring. originally it at play ah! as the warranty period, I had a customer for the same type of motherboard, sent to the customer. reboot failure never occurred.

many computer users in using the computer process inevitably will encounter many unexpected failures, then how should we deal with these unexpected problems, many users do not have to face the problem with a calm state of mind, most users is as long as the computer monitor does not display the Jiu panicked, worried that the information and data is not gone, the computer is broken, busy called in technicians, there are many are small ones, a lot of computer use Renyuan able to tackle and prevention.
Here I will discuss for the computer novice on how to use in case there is no technician to solve their own computer failure:
Experienced power outages
The policy should be: general power of this unexpected problems can only be used to solve the external environment, especially in the rural water and electricity supply situation, which the high frequency of sudden power outages, we should be on the computer protection. Solution: If assembly machine with computer matching our power brands, this can reduce the maximum voltage from power supply fluctuations on the adverse impact of the hardware. outage, close all the power to prevent the next incoming call display and part of the ATX power supply at the same time start, it will cause bad damage to the hardware. When you edit the presentation using WORD, the WORD spend the automatic save feature. If the power of the moment happens to you on disk, we suggest you Do not start the next boot disk to skip testing, testing whether the produce bad sectors. Once bad sectors, the use of
HDD and Victoria and other tools to repair or mask bad sectors. I offer download address for you: http://www.winal.com.cn/downinfo/52657.html like to go next, do not like to be bypassed. Other If you leave the economy on the proposed selection of a UPS, a period of time for the computer to provide power protection.
Automatic shutdown
Phenomenon: the computer in the normal course of operation, suddenly shut down the system or reboot the system automatically.
Phenomenon: today’s motherboards have temperature monitoring functions of the CPU, once the CPU temperature is too high, more than the motherboard BIOS the temperature set in the motherboard will automatically cut off power to protect the related hardware. On the other hand, the power system management and virus software can cause this phenomenon.
The policy should be: the phenomenon of the sudden shutdown has occurred if the first confirmed CPU heat is normal. Open visual fan blade chassis is working properly, and then enter the BIOS options to see the fan speed and CPU operating temperature. Discovered that the fan problem the dust on the fan for maintenance or replacement related to better quality fan. If the reason for excluding the hardware into the system, with the system installation CD to install power management coverage, and then killing the virus completely. When these factors are excluded, the failure cause the power supply on Keneng aging or damaged, this can be confirmed by replacing the power method, and we can install a power supply test Ye Yi Qi, Xia power Gongdianshipi test normal. Power broken on another Xin’s, must not continue to use, will burn the hardware
System crash
Phenomenon: the desktop is locked, the mouse can not move, even in severe hot start (ALT + CTRL + DEL) will not work. There is the blue screen phenomenon.
Phenomenon: First, we analyze the XP system as well as its own BUG software compatibility problems between the cause of the failure causes the user at the same time may be running too much to larger programs, resulting in blocking the process, triggering a crash.
Countermeasures: When the machine sub-2, true and false as when, the easiest way to distinguish between the two is the press area of the Numlock key keypad, observe the changes in light availability. There are fake when; the other hand, true When. leave when you can also press ALT + CTRL + DEL the task list in the event of the selected label does not respond after the program name items, click End Task. true if, and only cold started. For the blue screen, press the ESC key is invalid, select restart, press the reset button on the chassis panel. For compatibility issues, can uninstall \Virus attack
Phenomenon: the system runs slow, crashes, illegal operation, the hard disk light flash disorder often blue and baffling system prompted hh
Phenomenon: the virus is essentially a kind of malicious computer code, the virus through a large number of self-replication, while the system to run hidden, possession of system resources, but also severe damage to the software and hardware, such as the CIH, hard disk lock, etc. .
Countermeasures: as many as 10 thousand kinds of the virus now, strange, hard to detect, then how can we have this vast network in the normal sailing then?, In fact, good defense and we just open the pages and download more attention to the next, or poisoning can be reduced as much as possible the opportunity, first, defense is necessary. RISING Antivirus 2009 + RISING Firewall is the best choice. recommended to buy a genuine spend dozens of blocks around, you can purchase two to three individuals together with a serial number. purchase Rising anti-virus software to the computer in the city, computer store, or make a purchase http://shop.rising.com.cn/ Rising official site). firewalls installed in the network access rules to set against IE browser (IEXPLORE. EXE), Explorer (Explorer.exe) to access the network, because many viruses are using these two things secretly access the network to do more activities. RISING antivirus software after installation, open all the monitoring, Ge Jitian manually upgrade a virus database can, and occasionally a comprehensive look at virus scan.
Rising 2009 defense is very good, Internet time, the virus accidentally into the site, the previous version of the prompts virus, virus, or continue, and now tips the virus, the virus is blown away. IE disable access to the network, not can not open page a? It does not matter on, we install a better web browser .360 with a secure browser, a good browser, with multiple windows, shielding advertising and other functions. to www.winal.com.cn can download the classic version. < br />
Road goes, the magic of low ridge, the virus’s nemesis is anti-virus software. Once suspected his machine infected with the virus, restart your system to DOS, run the genuine RISING Antivirus (DOS version) so you can kill the XP systems not kill the virus; and then boot to desktop, run the WINDOWS version of antivirus software and then anti-virus. On the other hand, due to severe virus attack will destroy some documents; we attack the virus before the backup of important files to the C drive than other drivers, and the data files read-only attribute set. Meanwhile, we should always update the antivirus software, virus database, fewer pirated CDs have been online friends on unknown email attachments Do not download. There are many use of computers on the network novice like to download games, software, etc., then download anti-virus software must use poison to kill the general attention to see next suffix name. exe’s and only a few dozen KB file more attention to the point not to click on it golden lotus .
System failure
Phenomenon: can not enter the system, the typical performance for the Power On Self Test passed, stops at the splash screen, or display: Thediskiserror so there are many phenomena of E text prompts.
An Analysis: This is the system failure may be caused by many reasons, more common is the system file is modified, damaged or abnormal loading of the command line. In addition, hard drive failure is one of the reasons.
Countermeasures: first whether to try to enter safe mode, boot press F8 key, select the Start menu of the third: Safemodel (safe mode). Into Safe Mode, you can through Device Manager and System File Checker to look for fault, encountered a \Zai hard drive). If the security mode is inaccessible, on the adoption of CD-ROM or floppy disk with Start Start 到 DOS, DOS, Xian Bing Ju Yong Dir Jiancha C virus that plate system documentation is complete, if necessary through the system floppy disk to SysC:, recovery-related basic system files. If not found within the C disk file, only the system completely reinstall.
Driver lost
Phenomenon: when the 16-color boot display, put the audio files show \Phenomenon: exclude viruses cause, this phenomenon occurs in more than N months old used machine, or the user had recently moving parts within the host, (such as graphics cards and PCI cards), it may result in exposure of the hardware bad, cause the system to detect the substance did not completely related hardware.
Countermeasures: re-install the graphics drivers, and check-related accessories are fully in contact with the board: One is to ensure the video card, sound card cheat on the clean, second, to force it into the relevant slot properly aligned vertically into the you can, connect with connect with the speakers and monitors. If necessary, replace the PCI card slot location, to avoid resource conflicts and graphics production.
Boot Black Screen
Phenomenon: boot black screen, not shown, there may be alarm.
Phenomenon: poor contact between the hardware, or hardware failure, related hardware related to memory, graphics card, CPU, motherboards, power supplies. PC power supply by the boot first, then boot from the motherboard’s BIOS self-test, then through the CPU, memory, graphics, etc.. This process is reflected in the screen, called the self, the first information through the video card BIOS, then a motherboard information, then memory, hard drives, optical drives and so on. If this is the middle of which stepped out of the question, the computer can not normal start, and even black.
Countermeasures: first make sure the external connection and internal connection is to connect smoothly. External connection with a display, the host power supply. Internal console and the console interface connection (here sometimes poor contact). The more common causes of is: graphics card, memory due to the use of time is too long, and long-term exposure of dust in the air, causing finger on the oxide layer, leading to poor contact. In response, moderate alcohol use glue cotton wipe finger back and forth, wait until dry plug it back. In addition In addition, the observation of CPU is working correctly, start at about half a minute, hand-to-heat sink CPU fan whether temperature. a temperature, the CPU can be broken the basic rule out the possibility. not to tidy up the CPU temperature sockets, to ensure access to place. not after that temperature, your CPU can be upgraded: (In addition to the above methods, there is still one nirvana: the method used pull clear BIOS jumper settings or replace the motherboard CMOS battery . When these methods are tried and all fail, you can help solve the problem coming out of Costa Rica called prawns.
Sound strange odor
Phenomenon: hearing strange sound or smell the odor.
Phenomena: strange sound, possibly caused by bad sectors hard disk drive as issued (Princess of ear-piercing sound); also possible that the hard disk, drive screws without the prison, resulting in the chassis resonance. Odor, mostly pills only to discover, is stabbed the kind of nose.
Countermeasures: First turn off the power. If the strange sound, then open the case panel, 11 check, if bad sectors, then the repair or shield. The smell should be careful. Then use your nose to smell, to find the odor components, and then remove the handle by the computer company, in this middle, you have to defend their consumer rights. (you have not seen the warranty period for the for-mm, the repair of the repair.) million to the effect that no! because The author’s Onda smell pills only to discover that after the drive power is less than (slow N seconds) to burn alive driver chip (Firewall), and then, then let’s use the money there is no way to find businesses uncle. (so if we have heard to smell, immediately lost its power, and then look for reasons under the open case, but the display must not drive, only by professionals for repairs, but there are high voltage, and 10 million Do not take his own life a joke.
Memory alarm
Phenomenon:. \Phenomenon: The first day will start a \Countermeasures: general alarm over the memory of this failure is more common, mainly caused by poor contact memory. For example, non-standard memory, memory a bit thin, when the memory into the memory slot, leaving some gaps; poor memory cheat technology, the surface of gold cheat poor, over time, Finger surface oxide layer gradually thickened, leading to poor contact memory; memory slot the poor quality of the reed contacts with the memory does not cheat it is so.
We solve the problem, we must first open the case, with rubber carefully wipe the memory clean and cheat to get down and re-insert memory about, the memory slots with hot melt adhesive to fill the gap on both sides, to prevent the use of process continued oxidation. Note: swap memory when the host must pull off the power cord to prevent accidental burning memory.
Maintenance of computers, we often encounter boot, BIOS error prompt voice, if we know the reason these voices, then we exclude the computer failure is very convenient, can solve the problem within the shortest possible time.

1, \Generally common in the host power supply problems. But sometimes the output is low, the host is not alarming, but appears hard loss, poor performance drives can read the disks, the situation often crashes. When that happens, the best to check the output voltage from various quarters, on the low side, when the +5 V and +12 V less than 10%, will be the emergence of the above questions from time to time. because the power supply voltage output, a common misconception that the problem or motherboard hard drive problems, and waste a lot of time. cause the output voltage is low because the output filter capacitor failure though there might be some leakage caused by the DC component reduction, the supply of high frequency AC components increased, the work will interfere with the normal motherboard , resulting in system instability, prone to crash or blue screen phenomenon.
However, the situation in certain types of INTEL and GIGABYTE motherboard, if the system is a \2. \This is the alarm CPU overheating the system, mostly because the host internal dust, clean the CPU heat sink or the replacement of a new CPU fan, because installation is not in place, CPU heat sink and the CPU access is not strong, there are certain add a space or during debris, leading to the normal CPU can not shed the heat issue, a CPU to boot up to 80-90 ℃. If it is below PIII CPU, because the CPU’s temperature near the CPU test is used to probe the temperature near the collected to show the temperature value and the actual CPU temperature values have some errors, about the difference between 10-20 ℃. The PIV of the CPU’s temperature sensor is integrated into the CPU itself, then the system displays the CPU temperature is more accurate. As soon as the general host boot, the system prompts the CPU temperature in 50 ℃, it is normal.
3. \This is the voice alarm memory, the memory is generally loose, memory and memory slots cheat poor contact, the memory of the cheat oxidation, a memory chip is faulty and other reasons.
4. \This is the alarm card, video card is generally loose, damaged card, or motherboard video card power supply is faulty.
5. \If the image display system will be prompted to start the floppy, the floppy disk is being read. If there is no floppy disk, the system will prompt no system can not boot, the system hangs.
6. In the WIN system, press \For example Tells of PV40ML, this situation is a reminder of motherboard functionality that prompts the user to change the keyboard input state, not a fault. But because some people do not understand false edge, then that is a motherboard problem.

7. Short \In general, this is the system self-test passed, the system starts normally beep. However, some board self-test passed, no such beep, what a sound was heard. Also note that some board self-test time may take longer, will wait 56 seconds before heard \For computer novices, the key is to be the proper use of computers in the use of the virus among the basic common memory faults and plug the more common phenomenon, the virus generally do fault protection is required, there is as little as possible to download, but also U disk that is also a means of virus transmission. memory alarm issue is before the first computer to use the environment should do, do not attempt to remove the console cover, such as plug memory, recall cover the lid, as much as possible to fly into a small computer dust, and it can reduce the memory alarm probability.

1. fault phenomenon: to issue the Print command, the printer does not respond, the system prompts the printer is on-line and cable connection is.
Analysis and Maintenance: This is probably the end of the power cord plugged in the printer, print cable is not connected properly or their connections, the computer parallel port, etc. causes damage. Press the printer switch, see the printer can not be started. If you can not start (the power light does not shine ), first check whether the printer power cord and power supply and printer properly connected to the power jack. In the off state to re-plug the power cord again, and for an outlet to try to see can solve the problem. If you press the power switch , the printer can start properly, you look into the parallel port CMOS settings where settings are set correctly. the general use of the ECP printer mode, but some printers do not support ECP mode, this time can be \;. If the problem is not resolved, then focuses on check printing cable. first turn off the computer, the printer cable from the host’s parallel port, unplug, and re-plugged, then print the other end of the cable from the printer’s parallel port uplift Under the re-plugged. Note, must take the host off, do not live plug, or it may damage the printer! If the problem still not resolved, try to change the root print cable. is not, that is a problem with the board parallel port.
2. Fault phenomenon: using the network printer can not print or appear not find the network printer tips.
Analysis and Maintenance: first check the computer to connect the printer the printer settings are correct, and make sure that the printer is shared. And then check the remote PC using a network printer on the printer settings are correct. Note that the settings are correct but still can not print this situation may be encountered frequently in general we use the network printer in the computer to reinstall the correct printer driver again, the problem can be solved.
3. Fault phenomenon: the printer can not detect ink type or print out the characters blurred.
Analysis and maintenance: first, the washing of the print head (a lot of printer drivers in order to provide a cleaning print head, you can directly use the command). If the time did not use the printer, we must wash a few times more. If you demolished and installation of ink cartridges are more familiar with, it is best to remove cartridges to, a place near the print head with a soft, absorbent paper strong wipe clean. If you have not resolved, it may be a problem with the printer driver, the printer corresponding to reinstall the printer driver again, in general can solve the problem.
4. Fault phenomenon: use Word and other word processing software, edited files, print preview, neatly arranged, but with a printer to print out, on paper, some text overlapping. Analysis and Maintenance: This is generally due to the Editor when caused by improper settings, a change of file \Packaging Machinery Packing Machine Packing Machine Hand Sealing Machine Foot pressure plastic bag sealing machine vertical lathe CNC vertical lathe machine coding machine coding machine packaging machine shrink packaging machine labeling machine capping machine folding machine Qiqihar precision CNC Boring Machine CNC Vertical Lathe special combination of CNC rotary table CNC engraving and milling machine lathe ordinary meters factory CNC Vertical Lathe Machine CNC vertical and horizontal CNC boring machine rotary table, Dalian Machine Tool Research Institute, Nanjing high-speed engraving and milling machine CNC machine CNC Vertical transform a car Qiqihar Precision CNC horizontal boring machine tool design combined rotary table CNC carving and milling machine CNC general transformation of Guangdong Used CNC vertical lathe CNC programming CNC rotary table boring machine chart microchannel Nanjing CNC Engraving Machine CNC machine tool large-scale reconstruction program precision CNC Vertical Lathe CNC Tilting Rotary Table Boring Machine Tool Factory, Dalian, Shandong CNC Engraving Machine CNC machine tool manufacturing plant in Shandong reform overhaul CNC Vertical Lathe CNC boring machine manufacturers offer a small rotary table mold Atlas Machine Tool CNC engraving and milling machine CNC vertical lathe modification techniques Buy CNC Boring CNC rotary table design work training Yangzhou Machine Tool Works Shanghai, Foshan engraving and milling machine tools transform the low-profile foot plastic bag sealing machine packing machine sealing machine hand press home vacuum packaging machine single chamber vacuum packaging machine double chamber vacuum packaging machine packing machine plastic bags, hand-pressing sealing machine sealing machine vacuum packaging machine single chamber vacuum packaging machine double chamber vacuum packaging machine packer packer foot low-pressure plastic bag sealing machine hand sealing machine home vacuum packaging machine single chamber vacuum packaging machine double chamber Vacuum packaging machine packing machine sealing machine coding machine shrink packaging machine labeling machine capping machine high-speed folding machine inkjet printer inkjet printer Horizontal round bottle labeling machine labeler labeling machine flat side labeling machine labeling machine stickers Standard machine labeling machine labeling machine inkjet printer ink inkjet printer

more and more into the general consumer inkjet printer, office or home, give us a lot of convenience and fun. but inkjet printer is a high failure rate of computer peripherals, failure, or give users a lot of trouble.
Note that the printer about the daily maintenance of the printer, the printer will not only reduce the opportunities for failure, but also to extend the working life of the printer. The following are frequently used inkjet printers and related parts of the fault the hardware description of the structure.
Inkjet printers are commonly used mechanical and electrical integration, computer peripherals. Mechanical parts, including feeder, take the paper roll, a roller, print head, the word car components, the word car motor, take the paper motor, pump, pump accessories; Some, including motherboard and power supply circuit board. printers work by the power supply +36 V/42V board to drive the print head, the word car motor, take the paper motor, +5 V for logic circuit driving. all the mechanical work by the board under Computer instruction control signal coordination work.
When you press the enter / return key, or printer paper received print command transmitted to the computer, take the paper, according to the designed motor rotation direction, and passes power through the gears to the rubbing roller and the cam to rotate, cam rotation to prop up cardboard under spring tension in the bounce and twist roller contact, rotating rubbing roller will be placed on the care of paper cardboard paper sent to the printer using friction to the words between the roller and guide wheel, and continue to the former before Finally, the paper sent round to the printer paper, to complete the process of taking paper. nozzles eject ink in determining the location of points to form a pattern.
Question 1. Why go to print paper into the printer paper, the paper will get off track?
We understand the basic structure of the printer together after the principle, for the like of the printer problem occurs, and may have the following reasons:
(1) within the printer into the paper planes fall into the foreign body.
Strategy: The printer should feed out of paper, so foreign body is easy to fall into the printer from the Department’s internal channel, so pay close attention when using the printer, paper clips, staple set, buttons, rubber bands, etc. are easy to fall into the something inside the printer.
(2) printing paper surface is too smooth or easy to swap fiber powder. Measures: Some poor quality printing paper, together with some of the user environment is bad. Printer used for some time, rubbing the surface area remaining scraps of paper and paper round dust, to reduce the intensity of paper twist, resulting in skidding, there does not feed paper into the paper or distortion phenomenon. it is proposed that we should not seek the cheapest good quality paper as the paper, another to the printer, the use of a relatively clean environment.

(3) 2 into the printer paper holder paper twist when one of the loose bracket round, the round into the paper loss of function, resulting in straight into the paper.
Countermeasures: printer gently, do not use thick paper.
(4) the activities of the printer into the paper rack board blocked too far away from the edge of the paper, making paper from side to side amplitude increases.
Strategy: Simple, use much of the paper, put the activities adjust to baffle much.
Question 2. Printers Why use a time, the frequent inhaling printer printing paper printing paper after the print head is not moving, but only move back and forth?
There may be rubbing roller rubbing down paper capacity, resulting in rubbing paper is not in place, the word roll of paper can not reach and which can not continue to move forward, so there are only printing paper does not move the print head back and forth movement of the phenomenon. Countermeasure: may refer to the above question solution.
Question 3. The printer to print the first run after the boot process is ink consumption, why have some long, some short?
Printer after the print head is running boot to consume a certain amount of ink, the length of time by the board of Timer Circuit decision. The circuit in the printer is turned off, a button battery from the machine to calculate how long not being used, the next boot, the printer according to the circuit to provide the time interval between the two boot data, to determine the length of time cleaning the printer, the printer a long time without cleaning time president more. Countermeasure: Do not to \for long time will cause the print head block, abnormal functioning parts, printer will really be \4. Ink cartridges in the ink is the printer how to breathe through the pump house annex, print or not print fuzzy traces after the situation worse by washing, is the adsorption capacity of the pump accessories?
Printer ink pump instruction execution, the print head moved to the right initial position, then sealing the print head nozzles pump accessories, to cut off the outside air. At the same time take the paper motor to drive the pump wheel rotation, so that the inking pipe negative pressure , will be the ink cartridge into the print head and pump out of the annex, to lift the state seal, the pump will continue to rotate the suction pump in the annex to waste ink pad ink. If the print or not print fuzzy traces after the situation worse by washing, may be Pump accessories related to. countermeasures: no way to repair the.
Question 5. Print out Loumo not indicate a faulty nozzle?
General As the printing paper is uneven or print head of a foreign body, often in the printing will Cengdao print on paper, and the nozzle has nothing to do. Measures: Note the quality of paper used to print, do not use ink, not quality assurance.
6. The printer how to clean the print head?
Responses: need to clarify a concept, cleaning print head, in fact cleaning nozzle print head. If there is a slight blockage of the nozzle, the application of available software tools in the software solution called the nozzle cleaning function of the printer itself. If the nozzle clogging serious the software does not work, can be sent to the manufacturers repair station maintenance, engineers will remove the print head cleaning fluid to use special boxes ink wash.
7. Why slide printer produces the error, and even the phenomenon of the print head hit first?
Printer Guide and prolonged use of the word car or the environment because of poor use, will cause dirt track cars and wear the word, the word vehicle movement increasing the resistance, the resistance increases to a certain extent, the word can not be normal traction motor vehicle Vehicle movement will be driven word word car produces abnormal phenomenon first hit. Countermeasure: daily use to maintain a clean environment, if we find the word car track surface should be clean and add a little dirty oil.
8. The printer and the computer properly connected, the computer has the printer connected to the power button is not connected, why the power cord to plug the printer cable board, the printer parallel port burned, computer does not work?
Parallel connection does not support hot swap, this failure occurs with the printer hardware does not matter. Measures: Use parallel port to connect the printer, pay attention to the best side not to hot plug the computer parallel port.
Question 9. Why does the printer use a longer time, had also normal use, the printer suddenly light flashes, the printer does not work?
Inkjet printers have a waste ink pad, its role is to absorb the discharge when the print head cleaning waste ink. Printer each of the different forms of hair means the amount of ink consumed is not the same, depending on the motherboard control, counter to each Cleaning the print head ink consumed (that is, waste ink) the amount accumulated. When the accumulated waste ink counter reaches the upper limit, the printer will stop working, to prevent the waste ink pad full of ink absorption, after dropping to the inside of the printer ink printer damage. Countermeasure : If your print volume particularly, to note about the printer cartridges using 20, the printer may be such a problem. If this problem occurs, it is best to replace the printer to a repair station to a new waste ink pad, and Waste ink counter will be cleared.

If the DOS directory
into the Chinese phenomenon: a problem with my system, formatting the hard disk, and then intend to re-install the system. When the boot with the floppy, only to discover the operating system CD in the directory in Chinese! And DOS, browsing all garbled! how to go ah?
Answer: First, we must include the drive letter of Chinese directory (such as operating system installation CD-ROM) to establish a root directory list file. enter the drive letter, enter \; type x.txt \, and then save the file as \began to consider adding a high-capacity hard disk drive to set up dual system. However, after installing a second hard drive, old hard drive letter with the new hard disk drive letter appears cross, meaning that C is still the old hard disk drive in the partition that the operating system installed, while the D has become a new hard disk drive partition, while the old hard disk in D drive becomes the E drive, so that when the file will appear called a lot of trouble, and even lead to a These procedures can not be used.
Answer: The solution to this failure of the approach is not complicated, and friends can refer to the following options depending on the situation:
(1) WindOWS 20000/XP
WindOWS 2000/XP generally does not produce letter-cutting issues, but only to install Windows2000, XP installed only on a hard drive, install to hang up after the second hard drive, if you add a second hard drive is installed after the words WindOWS 2000/XP , then the letter is still produce cross, and it is permanent, even remove the second hard drive did not help. However, we can enter the \\number, and then repeat for other partitions can be of the order.
(2) Windows 9x/Me
There is a simple way to solve this problem, just a little in the BIOS Setup program, move some of their brains, will the first hard disk is set to \Detection of a second hard drive, and automatically assign the drive letter, letter of cross worrying phenomenon would be gone. of course, in pure DOS mode, a second hard drive is not visible.
(3) Fdisk :
we can Fdisk command in the implementation of the partition, select \use of the extended partition, then re-partition. That is not to create a primary partition only create an extended partition, the final format on the line.
3. Why is the \The program name
phenomenon: I do not know why, when I passed the \still retain the name of the program has been uninstalled, and even click on the \device, enter the HKEY LOCAL MACHINE \ SOFTWARE \ Mi
crosoft \ Windows \ CurrentVersion key, find Uninstall key, from here you can find a list of those who left the software will remove the head of the mouth can. If the \list name of the program are still there, can the Registry Editor through the \yo.
4 WINDOWS Installation Tips
phenomenon: the installation WindOWS, the screen displayed \up. This is why?
Answer: Actually, this is not a system failure, but because you open the BIOS anti-virus function, because Windows installation will be the primary boot to the hard drive write data, open the anti-virus function will lead to the hard disk’s master boot zones can not write any data, Anzhuang procedure should of course can not continue running forever Le Jiu. The solution is 简单, go to the BIOS to anti-virus Zanshiguanbi can.
5. every time Start a file is lost when the show information
phenomenon: I forcibly removed Duba such a problem after mm each boot information are shown in Figure 2. translated is: can not find a device file, This is a Windows or an application run time needs; Although the registry or SYSTEM.INI file still has the file, but this device does not exist; can re-install the application software, and then use its uninstall program ; this device file name is KavKml.vxd, press any key to continue.
Answer: In many cases, because we do not have the correct method to uninstall the software, but directly to delete the installation folder, so while not affecting the normal operation of the system , but will destroy the data in the registry, so that has caused this problem. The solution has three:
(1) to re-install
Since it is illegal to delete applications as the installation folder cause this failure occurs , we only need to re-install the application software, and then the correct way to uninstall on the line.
(2) manually remove spam
If the error message involving the file extension *. 386 or is not displayed file extension, you can enter the SYSTEM.INI file [386Enh] section
delete command line involved, the insurance can be the first with some of Rem screen does not work, then re-enter the Registry Editor to find the primary key of the command where In addition to the deleted
; If the error message involving the file extension *. vxd (in this case the situation), go to the registry code HKEY_LOCAl-MACHINE \ System \ CurrentControlSet \ Services \ VxD primary key and HKEY_LOCAlMACHINE \ Software \ Microsoft \ Windows \ CurrentVersion \ Run (RunOnce) primary key to delete the application-related information. However, this is relatively high on the user’s requirements, and
to use a certain risk, it is recommended to back up before you register table for the good.
(3) using software tools
Haha, this method is simple and more convenient. with the famous Norton System Check, it exists to help us test the system error, and then select \exist in the system can repair the error.
6 version of the software can not install the low
phenomenon: If you installed IE 6.0 SPl, DirectX9.0 Beta2, WindOWS Media P1ayer 9.0 Serial such as beta software, use a time later want to remove them, re-use of low version of the software, this is not so simple. Because of the above combination of components and operating systems are very close, the conventional method is unable to uninstall. if forced manually register l removed, may will cause the system to lose some features and even cause system crashes.
Answer: The WindOWS XP, the patch can be installed SPl on WindOWS 2000, the patch can be installed SP3, then you can from the \r Add or Remove Programs / Add or Remove WindOWS component \, for example, can clear the system IEradicator IE, DirectX Buster to clear the system DirectX, Of6ce 2000 File and RegistryEraser can clear. System Office 2000, then re-install the lower version of the software.
7.DOS installed under Windows very slow
phenomenon: DOS, install Windows, but partition, formatting the end, with the boot disk into the DOS environment, the only to discover that the slow pace of installation of Windows (especially the installation of Windows 2000/XP pm). the progress bar for a long time do not move, really worried to death of people.
Answer: Actually, this is not loaded Smartdrv.exe reason, it is a DOS command from the Windows 9x/Me installation CD or Windows 9x/Me the \ Windows folder, locate, size 44.3KB, it can be copied to the boot disk. Its role is to simulate the memory part of the disk buffer to speed up file access speed, Otherwise I am afraid the night might not be able to install the end of the yo.
8. registry damage
phenomenon: the Windows system registry is an extremely important document, if it is, once damaged, will lead to a lot of inexplicable failure, even system can not start, crashes, etc.. But in the practice, the it gave easily collapse, and even some viruses, may lead to abnormal operation is the registry of the damage.
Answer: Generally speaking, we can use the following Jizhong Method of repair registry:
(1) restart the system
As part of the registry information is stored in memory, such as HKEY_DYN_DATA key in the information, so if the problem is not too serious, you can try to restart systems. Such information can be read to the hard disk memory, registry errors also been fixed.
(2) boot into safe mode
the one hand, to boot into safe mode, the system will automatically repair registry errors, or you can in safe mode to back up the registry before re-import.
(3) to restore the registry
boot disk with the DOS system, at the command prompt Type \. cab, rb002.cab
5 copies of the backup registry files, corresponding to different dates, different time back down the registry, if the display \one of a registry, and then click on \br> Answer: the computer can run only three kinds of files: * exe, *. com, *. bat, other files you need the appropriate support program to open. a certain type of file must be opened with a software view, known as the \documents and associated Microsoft Outm
look, but more will need to install the associated application software can be created. such as *. zip file with WinZIP, *. rar file with WinRAR, *. iso file with WinISO, *. pdf file and Acroba, otherwise they will appear on the tips of information was shown.
9. Why Double click a file can not open
phenomenon: When I double click with the mouse in certain types of files from time to time, but can not open, this is why?
Answer: In the computer can run only three kinds of files: *. exe, *. com, *. bat, other files you need the appropriate support program to open. certain types of files must use a software to open the browser, called \. txt files associated with Notepad, *. EML files associated with Microsoft Outlook, but the more you need to install the associated application software can be created. such as *. zip file with WinZip, *. RAR file with WinZip , *. ISO file with WinISO, *. PBF file with Acrobat, otherwise they will appear above-mentioned phenomenon.
10. file is accidentally deleted
Answer: If the Recycle Bin has not yet been cleared, we can open and select \and so on. Here I introduce FinalData to use:.
(1) select the drive cluster scan
start FinalData, the choice is the drive where the deleted file, the routine drive scan, and then select Search cluster range. recommended default value, of course, if you know roughly where the deleted file clusters range, you can also manually specify the appropriate location so that the search time required on a relatively short number of phase
.
(2) Select the file
need to restore a directory scan after the end of analysis, and program interface to display search all files and folders, including the name of the directory has been deleted, and files. but was deleted directories and files The first character names have become a \careful not to choose the path where the deleted file, then OK the.
course, even if the functions of another powerful recovery tool, it can not guarantee 100% recovery recover accidentally deleted file. If you delete the After the file has been re-write the file, then it is difficult to restore them, so important data is regularly backed up as well.
11 windows 9x/Me can not access NTFS partitions
phenomenon: the increasingly more friends select the dual system, and when you install WindOWS 2000/XP choose to upgrade to the NTFS drive, instrument allows trouble because WindOWS 9x/Me, you can not access the NTFS partition will find.
Answer: Because NTPS partition format is supported only by WindOWS NT/2000/XP, but WindOWS 9x/Me only support FAT, FATl6, FAT32 format. if it is to access NTFS partition WindOWS 9x/Me can be produced using Winternals NTFS. foF windows98 to solve this problem. This software allows WindOWS 95, WindOWS 95 OSR2, Windows98, WindOWS 98SE access to the NTFS partition data. There is also a software called NTFSDOS access NTFS partitions in DOS, but the trial version only Read NTP5 partition with file permissions, but can not write to NTFS partitions. Winternals company produced many well-known software, such as ERD Commander 2002, DiskCommander, Remote Recover, etc.. need of a friend can go to http:/www.winternSlS. com / trynow / download the trial version.
12 install Norton AntiVirus, the Recycle Bin name was changed
phenomenon: Noaon AntiVirus or Norton Utilities installed, you will find the name of the Recycle Bin on the desktop has been more, read \; Norton
Protected Recycle Bin \; NortonProtected Recycle Bin Properties \can. such as \but suggest that the printer is not installed.
Answer: You certainly do not have to go back to install a printer, as long as the system installed a virtual printer, that is from the \certain models of printer drivers. but remember that during the installation process do not choose to print a test page, so you can properly preview the document.
14 burn out \: Sometimes, obviously the source disk is a bootable CD, but can not burn out guidance system, thereby wasting our time and energy.
Answer: Actually, you completely avoid such incidents from happening again. a kind of is first want to Burn the file format used WinlSO made a mirror image of the text
IS0 documents, and then use Daemon Tools loaded test whether the ISO document to guide the system. If everything is correct go to Ke Pan. another method is to directly copy the CD using CloneCD software.
15 can not be deleted-Restore folder
phenomenon: WindOWS Me and Windows XP, has a love-hate relationship is a \through the Restore folder achieved,
benefit is to protect the security of the system, but the price is hard to bring a sharp reduction of available space. But when you want to delete the folders-Restore husband, he found impossible. Even mode to boot to DOS to delete, reboot the system still will automatically create this folder.
Answer: You first need to open the \the system to delete the file _Restore folder on the line.
16 Why does the system always automatically search for Floppy
phenomenon: the system will automatically read floppy at times, for example, every time you start the system, open the Control Panel, close system. listen to TV drama, \the following conditions were set:
(1) Windows 9x/Me: Right-click \\; floppy drive / Floppy diskdrive \each
shutdown automatically search floppy drive, as long as the cancellation of these settings are on the line.
(4) file and memory: Word and Excel, there is a memory function that if the last time when running the program visited the floppy disk file, then open the program m factory times still will automatically search the floppy drive. The solution is not to let 0f6ce file search function automatically.
17 QQ in suspended animation in windows xp problem
phenomenon: when the system upgrade to Windows XP, there is excruciatingly slow when the QQ messaging unparalleled phenomenon, sometimes a message box pops up but nothing after the show, but after a while it returned to normal, answers: 1. SPl patch is installed, while upgrading QQ to the latest 0630 version, it can basically solve the problem QQ suspended animation; 2. is abolished in the Device Manager in the \Meanwhile Turn off advanced text services.
18 system tray icon missing this excerpt from: IT Service Network — www. itfww.com
phenomenon: Sometimes when a program for illegal operation, the system tray input France icon, time control icon, volume control icon disappeared. you can not determine what the current input method, or even not be able to adjust the volume, how do?
Answer: We have the following methods can be \icons:
1. Input icon: from \device \\the.
19 to 10% of disk defragmentation can not continue to
phenomenon: When running Windows Disk Defragmenter provided when 10% were unable to continue, died there (this issue only appears in the Windows 9x/Me system). Answer: It is recommended in order before you close all programs reside in memory. If the disk has serious physical damage, but also prone to this situation. If so, you only Format of the. This article is taken from: IT Service Network — www. itfww.com
20 system can not automatically shutdown
phenomenon: when the implementation of the \\In Windows9x/Me system. appears to this failure, we can follow the following three steps check:
1. Disable Fast Shutdown
WindOWS some hardware may not support the fast shutdown feature, you can \; Run \br> 2.
disable advanced power management features in the \resolve the fault.
21 starts after the computer shuts down
phenomenon: I recently encountered a strange phenomenon, in Windows 98 just started at the right time the screen will show \;, or shut down immediately after startup, or shutdown, restart, disturbing unbearable.
Answer: Generally speaking, the production of such failure was mainly due to Vmm32.vxd file Wininit.exe or damage caused The solution of course is to repair these two files: first enter the WindOWS \ system folder, Vmm32.vxd renamed Vmm32.XXX backup, and then \device \Windows98 often appear, the system prompts Rundll32 error, if the pop-up dialog box click \The dialog box in which horizontal.
solution: One of the reasons may be the mmsystem.d11 operating system files corrupted or missing, the other computer you can copy the file cover; addition, there may be System.ini file statements about mmsystem.dll loss. The solution is: \can save the restart. hardware the most trouble out of the question, the right to judge and rule out hardware failure, is an urgent need to master each DIY.
23 system can not find the drive
phenomenon starts: original works like a charm pioneer in the boot or restart the computer actually \no optical drive.
solution: Use boot disk to enter DOS environment, the drive letter and enter Scanreg / restore, the computer will reboot after a drive letter back to the previous case. If you have not resolved, the use of \Add Hardware Wizard. \can solve.
24 plug that is taken from the start of this article: IT Service Network — www. itfww.com reproduced please specify
phenomenon: some friends after the machine used to disconnect the power supply board, but problems are often a is a power supply board, the computer will automatically boot up, Power button useless.
solution: Some motherboard BIOS settings in \Fail \If the original is closed, open it can be. If you have tried the above method still does not solve the problem, you can plug in the wall of the dark line to add a switch to FireWire pass switch, then into the socket, in this switch There is a spring device, which would ensure a good power supply and FireWire m one-time exposure, does not appear much less contact with the phenomenon, in order to avoid misuse of the power supply (hint: operation safety).
25: Monitor refresh rate settings low
phenomenon: A colleague bought a new computer, is a 17-inch flat screen monitor. But the next day a problem with his monitor: jitter may experience harm! solution: monitor refresh rate to achieve the minimum 75Hz, proposals set to 85Hz and above, then, we will not feel the screen is \\\
phenomenon: the boot, the display has no light, the light was orange state. The host has not read the hard drive self test and sound.
solution: In this issue there are several aspects of the main reasons. < br> 1. graphics card connection is bad or not plugged in, we can open the case, pull the card and then re-m factory plug;
2. graphics card quality.
3. In the old Celeron (S10t 1 ) system is also very prone to this problem, especially when the computer is not a long time after use! I’ve seen at least more than 20 cases of such problems. solution is very simple: to S10t 1 structure re-plug CPU time can be solved mmCPU poor contact.
27: display Huaping
phenomenon: the 1st World War is CS, the colorful display suddenly appeared \. This phenomenon occurs after the first, it often appears, sometimes directly crashes altogether.
solution: \br> 28 …

Computer Repair Training: Common Computer Breakdown Maintenance – graphics and display articles
2, CRT monitors Fault
here I have to stress that, because the display device within the high voltage, relatively serious problems have been detected should be sent to professional maintenance point of maintenance, rather than their own dispose, in order to avoid fire, personal injury and other dangers. Moreover, some display \not open the display power switch or the like to connect the signal wire loose.
1, display color cast problem occurs if
improper use or maintenance may result displays the phenomenon of color cast there. display color cast, first of all graphics cards should be excluded and display the signal line, a lot of time to signal poor contact will result in display color cast problems arise.
display most of the time is likely to be caused by magnetization. CRT display will be a strong magnetic field of magnetized in abnormal things color problems, such as the bass speaker without magnetic shielding, is normally a good display after boot automatically degaussing, or with manual degaussing function, but display their own degaussing function is limited, if the display is magnetized, then get more serious, demagnetizing function using only its own can not complete demagnetization, when you need specialized equipment (such as degaussing wand) to degaussing. Certainly, if the professional service point after degaussing, the screen is still color cast, it might display a quality problem such as degaussing device burn, can only repair the.
2, can not adjust the refresh rate
some friends often encountered in the \refresh rate mostly because monitors did not choose the correct type of result. display the type of selection is often easily overlooked, and many friends, a casual display type is set to \Frequency of problems (because of an error in the refresh rate parameters Keneng Chansheng damage the display, so identification of Xianshi Qi Bu Neng Duiyu system, all according to the most conservative default Shezhi (60hz). to solve the Fangfa is Zai Xianshizhuxing display Lei Xing Zhong Xuanzezhengque If you are using a Windows does not recognize the no-name display, can pick a performance close to the product substitution. In addition, the frequency of adjustments to refresh with graphics driver. some of the driver to adjust the refresh rate to support more options. < br> 3, display abnormal noise
some of the older monitors to enter the game for each state (that is, from the desktop to switch to the game state) will produce a very loud \relay to switch the resolution and refresh rate, given flap should be normal, not the display quality. now display new models have a new silent electronic switch design, there should not be this problem.
but to pay attention to high-voltage ignition caused by abnormal flap problem. display abnormal noise occurs is likely to be ignition coil ignition and other hardware problems, usually because of too much dust, humidity and other environmental cause, if this phenomenon frequent repair as soon as possible. monitor the use of the environment must keep dry and clean.
3, liquid crystal displays common faults
1, the water ripples and Huaping problems arise
first carefully check whether computer peripherals presence of electromagnetic interference, and then replace a graphics card, or receipt of another computer monitor, video card itself does not confirm the problem, and then adjust the refresh rate. If you exclude the above reasons, it is possible that the quality of the LCD display, and such the thermal stability of the bad issues. wave of water is a liquid crystal display appears more common quality problems, they can not solve, the proposed replacement or repair as soon as possible.
some LCD monitors when you start Huaping, a phenomenon generally VGA interface to connect through the normal prone, reasons, mainly because the LCD display itself is difficult and the input clock frequency analog signal synchronization clock to keep one hundred percent, especially in the analog sync signal frequency of the changing times, if this LCD monitor when the synchronization circuit, or connected with the graphics card sync signal transmission lines appeared short circuit, poor contact and so on, can not be promptly adjusted to maintain the necessary follow-up synchronization relationship, then the problem occurs Huaping.
2, display resolution is set incorrectly
difference principle as shown, liquid crystal displays and the general CRT display is different, the screen resolution can not be arbitrarily set, in general, were the best values. traditional CRT monitors support for the resolution of a more flexible, but the LCD only supports the so-called \Screen display range, display remains the same, more than some of the black handle, do not feel very comfortable. There is also likely to use the interpolation method, no matter what resolutions remain in full-screen, but this time display will be greatly reduced . Also set the refresh rate of LCD picture quality with a certain degree, we can set the proper refresh rate of the actual situation, the general set to 60 Hz the best.
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2. CD-ROM drive read the disk performance of instability, and sometimes to read the disk, sometimes they do not read any disk drive power supply
① .. not normal, sometimes stable, sometimes low or no power supply, it may be only way power supply. similar to the 1.2 description of fault, when the +5 V voltage of +12 V voltage is normally lost when the drive internal chip work
voltage interruption, loss of performance for the CD symbol, but the drive to the box; when the +12 voltage is lost The +5 V voltage is normal, showing signs for the CD has, but not normally a box, even if they can find a way into the CD-ROM can not read the data.
② .. system is infected with a virus, against the disc read. When Systems infected with the virus, modified the registry, shielding the drive letter, the time for the CD symbol system performance loss, while optical drive may not read, even if the drive can read
to the data, as in \Computer \, can not properly read the disk drive; when the debris removed, the drive can properly read the disk on the.
when you use CD-ROM, CD-ROM in order to distinguish the content, like the use of the word written on a sticker affixed to the disc. In fact this practice undesirable, first, because paste paper, it will cause uneven weight of the disc. When the CD speed work, easily lead to
disc vibration, serious damage may be deep-fried dish or laser head; another species is labeled as prolonged use of paper or other reasons
read disc easily fall off, remain in the drive inside. If these happen to fall on paper the objective lens on the laser head, CD-ROM can not read properly. because the CD-ROM high-speed rotation of air will sometimes change the location of these stickers
, so sometimes the disc will read normal.
3. loaded optical drive, the system becomes extremely unresponsive, intolerable
① .. drive their own problems
situation encountered in the Sony 52XCDROM drive over time, the performance of the system startup self-test process requires 56 minutes, five or six minutes into the desktop. can use of replacement methods, such as changing drive disappeared after the failure, it can determine
is drive the problem.
② .. drive settings in the BIOS settings problem
have related to the drive read the disk mode setting the same time, the system manager can also drive the associated set. If the drive does not support DMA data reading means, and we try to set the DMA mode data, the time
read the disc, the system appears slow or Death.
③ .. the data line drive circuit or both ends of the junction interface, there is a broken needle or looper

phenomenon is not easy to detect such problems, and sometimes that is used to replace a number of us < br> According to line faults remain, we need to carefully check the
data line drive interface, IDE hard drive interfaces.
④ .. drive the master and slave jumper settings wrong
disk drive and hard disk if use the same IDE interface, we must pay attention to the master from the disk drive jumper settings. Yinwei drive different, when we drive and hard disk drives to jump into the main site or from a disk location, due to differences in the chip, most will have
1 (CD-ROM or hard disk) priority to use the interface. However, each time the performance of the system will start slow.
there is the individual drive IDE1 interface using the jumper must jump from the wheel of Otherwise it will cause drive can not normal use.
4. When the drive to realize after-hours, beginning when reading optical discs, a high-speed
rotation, the system will reboot
① .. power power shortage
We usually say that the host switch power supply power is 250W or 350W,
actual output power is much smaller than this, not 5Vt15A +
12Vt10A +3.3 Vt20A + other so reckoned. because
for a voltage the maximum output current is like other no-load output voltage when the tests
state data, so all the work when all the voltage,
if the way in which voltage overload, and other various quarters of the output voltage
flow will be reduced accordingly, far below its maximum current. If it is 3.3V or 5V voltage decreases too much, can lead to lack of CPU power or memory power
unstable, causing the reset circuit board automatically reset and re-
new start. This is what we see is what drives high-speed transfer
start moving, the host will restart the phenomenon.
② .. motherboard failure
If the motherboard IDE Interface with failure, such failure may occur.
5. drive will somehow automatically pop into
① .. bomb the host computer hackers control
when this problem occurs most often in the machine and do not use the Internet Skynet other firewall software, when we use MSN or QQ and receive e-mail, in open unknown email attachments can occur after this case, the computer is locked
set registry hack, forbid us to shut down or open My Computer, etc., when serious computer hackers remote control directly, appear automatically keep the pop-up drive into bombs, drive crazy switch, turn off monitor display.
② .. drive the eject button on the switch for a poor performance baffle drive chassis, when we press the eject button, it will spread through the baffle and then drive the pop-up button on the touch if the button is not flexible and can not bounce when pressed, will pop out
are key been a long time pressed, then drive will show as soon as just a bomb into the box, then press the box key, is still just pop into the on again bomb, can not replace the CD-ROM.
6. system to normal start, but a CD-ROM, or on the Blue Screen of Death
This first CD-ROM drive can read the disks or CD-ROM has poor scratch serious, into your optical drive, it can detect the presence of CD, but easy to read data read into the dead state, causing a blue screen or crash the system; another reason is
drive DMA channel has been opened, while the drive itself does not support DMA data transfer function, so also the phenomenon of blue screen or hang.
7.DVD drive can read DVD discs, but can not read VCD discs
we all know, DVD drive can read DVD and VCD discs, but they should read the disk performance is not the same. In general, DVD read CDROM drive CDROM format disc capacity than the ability to read CD-ROM CDROM worse, it will
reflected on the 52X CD-ROM in the CD-ROM can be read correctly, he burst on the DVD drive can not read. However, if the DVD drive can read DVD discs, but can not read VCD, DVD drive itself that is the problem. If the words of Paul in
, should require businesses to change. such problems in real life is also not uncommon. < br> 8. CD-ROM drive can read the disks have a \serious damage, although this time to check the CD-ROM drive and CD formats exist, but reading
data, the laser head will move the servo circuit to read data as much as possible, if the laser head shift position over large, and because the poor quality of the disc surface, uneven quality, high-speed CD-ROM does not work, a plane, this time focusing when the laser head will move
bumped CD and CD-ROM access and produce intermittent \\have many scratches, which is why Pirates of the vulnerable program
Edition disc tray. In severe cases, because the drive speed of work and there will be deep-fried dish, the result is damage not drive to work.
9. particularly when the sound drive can read the disks, sometimes so large that some scary, the chassis will be followed by Zhen Dong Qing Kuang Ye more common that, in particular, 一些 buy a new Diannao De Yong Hu (Duiyu DIY machine), Jing Chang will reflect Ziji home computer drive Reading
disc special ring sound, like tractors, as can be heard throughout the house. of severe vibration throughout the chassis will be followed, if the chassis is going to explode. In fact, this is a normal phenomenon. When a high drive to 52X speed work, speed per minute up to several thousand
turn, if the chassis is not designed to be a reasonable time to work motor noise will be amplified, causing the chassis resonance, which lead to the drive read the disk particularly when the noise . This is the DIY market drives many were later released
can manually
deceleration function, its main purpose is to reduce the noise when the drive can read the disks.
10. drive to normal playback CD, but can not read data disc drives configured
computer can play CD music discs, but some drives have a play button panel, can do without software support will be able to directly from the front of the audio interface or sound card’s CD audio input interface connected to the output music signal
; the drive must have software support individual to play CD discs. in WIN98 ago because there is no corresponding software support, CD Play CD music disc, CD-ROM drive and sound card must have a CD audio cable to connect to a music signal output; because
XP system now supports digital audio, and super king 3000 digital audio features, you can also do not need to play CD audio cable CD CD. such problems can be detailed further examination, even if the entire Zhang CD, can play, shows drive to
hardware itself is no problem; such as data CD-ROM can not read, we should first wonder whether the encrypted data disc and we opened the DMA data channel. At present the market of pirated CD-ROM in order to avoid inspection, are artificially
line on CD-ROM into the encryption settings, must be decrypted using the appropriate means to properly read the data on the disc, which we need special attention.
11. CD-ROM drive can read normal disk, but it was just not read certain type of disc, such as encryption software, CD-ROM learning
not drive this issue, in part to learn the software to prevent piracy, all data is encrypted on the CD-ROM set. the majority of users are Description of the learning software CD-ROM can not read, because the purchase of pirated software, sign making
copyright can not do when, so we can read the disc does not occur, whereas customers mistaken for a drive in question.
12. drive read the disk normal, but the replacement disc, double-click the CD drive letter displayed in the content, or content of the first disc, restart the computer only after the replacement of the CD to re-display the same content for after-hours, which floppy disk will often encounter
to. the reasons is that the floppy disk detection switch for dirty, can not identify whether there is change drive behavior, so the host has not been replaced and that the floppy disk still shows the contents of the first floppy disk. CD-ROM also This situation occurs, no matter what you change
CD, simply open \read the disk error. This situation, if we do not click the refresh effect, can only be resolved after restarting the computer
, so the boot can only read a CD-ROM content. This problem is optical reasons, can only replace the drive solution.
13.DVD drive read the disk performance of normal, but in the \because the CD-ROM icon often appears as CD drive, the disc into the DVD can not be properly read. This also often make customer complaints, obviously I bought the machine
device is written in the DVD drive, can burst into the computer shows the CDROM drive. The solution is simple, as long as we drive in Device Manager properties in the \CD-ROM of the.
14. Play DVD, automatic shutdown, the system is XP. using a variety of player software, the system re-install over N times, but all
been resolved. like a normal shutdown system shutdown performance, not any illegal action or error. This problem occurs in the macro three dazzling 3000 film machine, to solve this problem is also very special, there is no problem when playing VCD, only shut down when playing DVD
phenomenon, after the last replacement card troubleshooting, probably due to poor graphics card compatibility with motherboard caused.
why no response after the CD into the CD-ROM
Q: My computer recently bit of a problem, CD-ROM into the drive and nothing happens, open the \My Computer \
A: Obviously, this is a typical drive aging, decreased ability to read the disks (up to can not read the disks) causes the failure phenomenon. you can only remove the evacuation drive clean shaved head maintenance point, adjust the laser energy. If the drive No other problems, such Department
reason, may continue for another use for some time. used for a period of time, the drive read the disk capacity variation is a natural phenomenon, generally because of laser aging, weak laser intensity or laser head lenses and mirrors on the following more dust stained,
thus reducing the intensity of light excitation
. looking for professionals to open a drive to adjust the laser emission intensity shaved head look is to improve the ability to read the disks more-impact method, can also be coated with a little cotton head cleaning agent solution or ethyl alcohol, gently wipe the laser lens and the lens through
the following mirrors to remove dust, read the disk capacity will be better.
If by the above approach is invalid, then how much the value has not, please replace a new drive.
Why not start from the drive system
Q: My computer has a fault. I will take the hard disk and optical drive in the same data online, the hard drive set to MASTER, drive set to SLAVE. but the drive type can not be recognized and can not boot from the drive system (BIOS CDROM priorities have been set
first start),
What kind of reason?
A: For the first question, we must pay special attention to where the BIOS in IDE port drive must be set to \drives are connected to different data lines, will drive
set to MASTER, see if you can solve the problem. The system can not boot from the CD, make sure your installation settings if no error, because it may be because your drive can read the disks decreased ability to use the bootable CD-ROM or a problem in itself. First of all, like him for a few CDs to try
, no, of course, need to change drive or cleaning the laser head to adjust the energy of the laser head.
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provide TXTUMDJAR free download phone book memory failure
Chapter
more memory mixed interpolation problem solving
computer upgrade will give computer users or the owner left some still use the hardware resources, memory is one of them. The so-called mixed interpolation Neicun is different specification (Currently, most of the memory is PC100 and PC133), or
who are different capacity, or different brands of memory in the same computer, mixed use, and thus better use of the available memory resources, better use of the initial investment. different sizes, different brands of memory in general mixed interpolation is relatively simple,
Here we are mainly talking about mixing different norms of memory inserted.
a memory mixed interpolation principle
on low memory in order to better ensure the success and stability of mixed interpolation, risk reduction, in general, we are of low standard, low standard of memory into the memory slot on the first place DIMM1.
2, insert the memory mixed common problems and solutions
1. can not boot, or even a black screen type There are three major ways to solve: First, change the location of the memory, which is the most simple and most commonly used method; Secondly, the basic premise can boot into the BIOS
setting, the memory of the corresponding items (including CAS, etc.) to set a low standard of the corresponding value: the third, using one of a memory (if it is PCI00 and PCI33 of memory mixed with the best to use the PCI00 memory), boot the computer into
BIOS settings to force the memory of the corresponding item set to a low standard of the corresponding value, determine the correct, before it shut down roots into the second memory.
2. the computer is running the emergence of such problems of instability
main memory compatibility due to address the basic idea is: First, change the memory location; second, newer and better operating system upgrade, the new operating system in general have a better management mechanism will be more good
use and deployment of different types of hardware; third, such as board support the use of forced entry on the motherboard memory settings asynchronous memory operating frequency (a low standard of the subject), this approach to the use of copper and at the same P Ⅲ use PC100 and PC133 kept inside
quite effective. If the memory temperature is too high, the possibility of this phenomenon is the biggest memory used for blending with different voltage plug. The solution mainly depends on whether the motherboard supports the memory voltage adjustable If the motherboard supports, in the main
board or BIOS set the memory voltage in force for all mixed inserted memory voltage minimum.
3. mix after interpolation value memory and computer memory values test ranging
reasons for this phenomenon, first possibility is low because motherboard BIOS version, can support the total value of the memory of an upper limit, the component parts exceeds the limit does not recognize and use, the solution is to download The latest motherboard BIOS program into the
line refresh; second possibility is that the reasons for their own motherboard chipsets caused by some old motherboard only supports 256MB of memory capacity (or less), beyond the 256MB part, are not recognized and use, the only way to solve this problem is to replace the
motherboard.
3, inserted in the memory mixed note
1. not to mix different types of memory inserted
general, different types of operating voltage of memory there is a big difference, and this value is much higher than the capacity of the memory itself, and the electrical interface of different types of memory are different, so different types of memory can not be carried out
mixed interpolation. Even if the board offers two or more than two memory slots in different Lei Xing, Chufeizhuban Yongyouteshu She Zhi Xiang, Fouze 将 mix of different types of memory inserted, the Youyu voltage Deng Duozhongyinsu reasons, Ke Neng Hui Suoduanneicun of Shi Yong Life
life, or even result in burning memory. This is generally not recommended EDO ~ SDRAM in the same motherboard at the same time the use of reason.
2. try not to be the same type of memory mixed with different voltage plug < br> Even if there is SDRAM 3.5V, 3.3V and, if so this mixing of two different voltage of memory inserted, the computer will not only result in the appearance of instability, but also accelerate the aging of low-voltage memory, or even destroyed.
3. Note that the memory load
any motherboard chipset are all DIMM memory slots (or other forms of memory slots) of the maximum output power is limited, it is our use of multiple double-sided memory at the same time all memory slot poking, while the total memory capacity has not reached the main
board chipsets supported by the upper limit of memory, the computer does not recognize the total memory capacity, or even to open an important cause. Generally speaking, making memory mixed When inserted, if the situation poking memory slots, of which one should at least
use single memory.
not pull tricks to solve flash
I often use the computer room at school, flash drive to store frequently used data and commonly used software, sometimes need to unplug the flash drive after use, they were in trouble, \and I also turn off the flash disk to run the program, stop the computers and flash drive transmission 数据, but still can not close this device.
the author’s past and by directly reboot or shut down directly. 在 work or study O’clock Yudao such things, emotions have been disrupted, severely affected by mood. If the direct pull may cause data loss or damage away (I once encountered)
.
solution
I found in the system When loading hardware drivers flash drive will automatically run the system file \procedures, and no flash drives to read and write action, and then click the \Click \Manager \(If there are multiple \; Task Manager Warning \!
just be sure, there is finally a way to turn off the computer and wait for the lights flash drive off after, you can safely pull out; If there is no light in the flash disk, then wait until after the computer power light is off , you can pull out the safety
.
occurred in the above two methods are \The problem? the answer is yes!
open \property \choose to use the flash drive (Note: Do not choose wrong, there appears hard drives, floppy drives, virtual drives and other devices), select and click \set name ‘attribute \The data disk may be damaged or lost. Select End later, click \carefully, you will find more of a miracle!
clever set BIOS to the recent failures of memory profiling
I own a computer assembly, configuration roughly Jetway P4XFA motherboard (VIAP4X266A chip set), Celeron 2.0GHz processing devices, modern 256MBSDRAM memory, 40GB Seagate Barracuda IV hard disk, TNT2M6432MB graphics, in addition to significant
The display, CPU, chassis, power supply, keyboard, mouse, new purchases of other parts are mostly foreign to the Internet scouring second-hand goods, machine The overall performance can be relatively backward, but I use it for word processing, Internet chat, listen to MP3, see also
DVD is more than sufficient. bottles and machine, then install Windows98/XP dual operating system install Windows98, everything normal, then install WindowsXP, this time the problem came with the boot CD to install WindowsXP, but finished in front of the complex
system driver files, blue screen of death appeared. blue screen of information roughly means \; operating system installation failed to initialize, software or hardware is not installed correctly, the proposed re-install. \hard drive in your system for the emergence of bad sectors? was used in the Windows98 disk scanning and multiple detection tools hard drive, but did not detect any physical hard disk bad sectors
. Since the hard drive no problem, the problem will not be out in the memory on it? Jetway P4X266A because only one SDRAM memory slots, so I bought a modern 256MB of SDRAM memory, the problem will root in modern memory at this then
? So in the Windows98 Detection and analysis with some test software, but found the speed and memory compatibility problems do not exist, what exactly is it? will not be a problem with BIOS settings, enter the BIOS see, but there is nothing wrong to set it. But when I see accidentally discovered \can greatly speed up the startup speed. why not set it to \Speaker issued a long 2 short alarm tone, with the author’s experience, it seems indeed that the memory problem, BIOS can only detect the size of the previous 36MB, no wonder a mistake when installing WindowsXP. Then replace the deposit within the
2 128MB of memory, of which a plug, then install WindowsXP, the problem will be solved.
the most current motherboard BIOS to include a \suggested that when installed this one set \br> phone book available for free download
TXTUMDJAR Chapter disk failure
\or after a self-test after the system prompt \table, indicating error-free, then scan the disk in the DOS on the hard disk sector a complete examination, the results indicated that there is no bad sectors, not by the virus after the virus is found.
In my above-mentioned operation, the drive appeared once the fault is not detected, then return to normal. This can be strange, I received a friend’s machine to the hard disk from the disk to do, from the official website for the official inspection software on the hard drive was full of
detection, reporting all normal . I understand some, simply remove the hard drive to, at a friend’s machine, then the main disk, hard disk failure is not detected from time to time disappeared. Is it because the author motherboard IDE interface, broken or loose contact? home < br> in, I blow balloon with a brush and IDE slots for the cleaning and maintenance, then plug in to the hard drive, failure still. then change to another IDE interface, the hard drive connected to the IDE2 interface on the drives connected to the IDE1 interface, the boot several times, made
is hard disk failure still exists, but suspected broken IDE1 drive to work properly.
why the change in other people’s machines without hard disk failure, in their own machines for the IDE interface to failure again? what parts and hard about it, is it south bridge chip, job insecurity? should not.
on, and there are hard drive data cable. I think of this, hastened to drive data line and data line swap hard drives, hard disk has been tested and no fault is not detected, while drive is often not detected. seems to want to change data on the line, however,
data line looks and hard about the author carefully observe 40-pin cable interface, noted there are several core lines have experienced subtle deflection, this will lead to the data line is not working properly then?
I just received a CD-ROM, CD-ROM drive is not detected, press the DEL key to enter the BIOS, the IDE interface and then scanning optical drive, while the data lines by hand under the direction inclined towards them down the results can be detected. It seems that what the data line can be fixed without cost to solve
this problem. what fixed it, I thought of using the ligation wire installed. fetch ligation wire, around the core pin data cable in a circle around the place, good beam position, to ensure that the pressure ligation wire to the data line can keep data lines within the core pin
normal package access. Sure enough, after this treatment, failure was finally resolved.
copy the files to install system error
Q: My PC configuration is: Motherboard is ASUS P4PEX, CPU is P42.4CGHz, Colorful radium 9100 graphics, 120GB hard drive department data, HYDDR400256MB memory. Recently re-installed due to system instability in WinXP, but the installation process over
error when copying system files, press \; can skip the error to continue after the installation, but later a error, Windows installation can not be completed, this is why?
A: Because the error occurred in the system file copy stage, please use the following approach: < br> 1. Installation CD question. If the installation CD in the file is corrupted or can not read, copy the system files will be in error, can replace WinXP installation CD to reinstall.
2. hard questions. If there is bad sectors hard drives, this phenomenon may occur, please use the software to repair or replace the hard disk.
3. memory problems. WinXP installation needs to copy files from the CD to the hard disk, and memory as a transit system data exchange , in the process played an extremely important role. If the memory of poor quality, not stability, but also lead to system files
error.
4. CD-ROM or hard drive data lines problem, Genghuan corresponding data line to try.
strange hard drive failure
unit computer, configuration is not high, has been running well, a computer system failure, as a student machine, no light floppy drive, hard drive had to be removed to, then In other computers running on GHOST, as hard drive capacity
parameters are the same, the proportion of installed systems that much easier. GHOST completed, will be hard to remove, and then received the original machine, actually had a failure . in the BIOS can not detect the hard disk, hard disk data suspected to be line and power cord is not fully seated,
this crossing a line and then disconnect the plug in, restart the computer, can be detected in the BIOS to the hard disk, but capacity does not match the original is a 2GB hard drive, now a 4GB, capacity doubled, is it picked up a great deal? save settings and exit BIOS,
the computer restarts, but the system freezes after self-test can not enter the Windows system. Remove the hard drive comes just a system failure, the other is no problem, Ye GHOST to complete the normal procedure, but only appeared GHOST complete Hou hard problems, and
in Yi Dong Guo …

Chapter CPU
typical failure analysis
CPU common fault to the following categories: cooling failure, restart the fault, a black screen failure and overclocking failure. As CPU itself is very small chance of failure, so most problems are caused because the user carelessness.
Case 1: CPU pin connection is bad, cause the machine can not start
Failure phenomenon: a user a AthlonCPU computer use in daily life has been normal, and one day suddenly can not boot, no screen display signal output, began to identify graphics card failure. Replace the method with inspection and found no problem cards, and later speculated that display failure, after inspection, the display also all normal. wonder while, disconnect the plug on the motherboard’s CPU, carefully observe the no burn marks, but just can not light up the machine. was later discovered that CPU’s pins are black, hair green, with traces of oxidation and rust (CPU’s pins for the copper material, the outer layer of gold), then on the CPU pins with a toothbrush to do the cleaning work, and can power up the computer to work. Failure Analysis: CPU rust resolves the problem, But how come what rust? final piece fell into doubt chip cooling, film cooling talked about my previous article, there is condensation, probably because of chip to chip cooling surface temperature too low, the dew point lower than closed, lead to long-term CPU work in wet conditions. The bare copper pin in this environment and react with oxygen in the air generates rust. accumulating too much rust caused by poor contact, thus triggering the odd failure. In addition there are some bad motherboard , due to the poor quality of CPU sockets, will result in poor contact, users need their own CPU and socket contacts fixed, can we resolve the problem.
Case 2: \degrees Celsius (using the motherboard temperature monitoring functions are), just run the CPU occupancy rate of the procedure, one would hang; while the Celeron Ⅱ 566 overclocked to 850MHz, the system temperature is 50 degrees Celsius, more than 10 minutes before running QuakeIII crash. estimated that the temperature at this time has more than 55 degrees Celsius, while the core temperature of CPU failures by measurement, found to have reached 86.4 degrees Celsius. was later discovered that CPU is running at such a low temperature was almost destroyed. But he found that laptop has no such \different \Its core temperature, because the common desktop board temperature sensor and the CPU is simply no heat sink or CPU access, only the measurement of air temperature near the CPU. This appears to cause a lot of CPU temperature in case of fire. from Intel released the data of view, Pentium Ⅲ 550E temperature limits of 85 degrees Celsius, Pentium Ⅲ 800E limit temperature of 80 degrees Celsius. If we lose our vigilance, partial letter board’s report, that their CPU is also running at low temperature, then great special wrong wrong.
Why this difference does not appear laptop? Original notebook is used on the CPU temperature thermistor, thermocouple at the bottom of the CPU, if the direct reading, in fact, not such a high temperature, and its display monitor temperature after correction, than measurements of the temperatures are high, thus closer to the CPU’s core temperature. so most of the test notebook CPU core temperature is the temperature, CPU will not be burned at low temperatures the situation.
Case 3: Suspend mode causes CPU burning
Failure phenomena: a general system hangs and will not cause CPU burn, the system will automatically reduce the CPU operating frequency and fan speed to save energy. And Suspend mode are talking about here was burned causing CPU are all after overclocking CPU. Perhaps you will find this a bit weird, after the CPU overclocking Why are destroyed? all these are caused by the fan to stop running. It turned out the motherboard except monitor chips can monitor fan speed, the others still in the system into Suspend (linked to onwards) power-saving mode, automatically reduce the fan speed or even completely stop functioning, this is a well-intentioned, can be power, but also can extend fan life and usage time. the last CPU is idle, the heat is not high, so the fan does not turn, can only cope with thermal heat sink. But now the CPU frequency is too high, even into suspend mode, when the fan does not turn when, CPU heat will be hot. So some people will encounter from Hang becomes normal mode, Windows98 will crash and blue screen, and this is an error generated by CPU overheating. serious, CPU will hang because of overheating, especially after overclocking Thunderbird or Duron.
Failure Analysis: This board will not occur in every block, occurs when three conditions are met. First of all, CPU fan must be a 3pin fan, this will only be under the control board. Second, the board’s monitoring function must have FanOffWhenSuspend ( enter suspend mode or turn off the fan power supply), and this feature is default On. Some motherboards default On, and even there some setting in PowerManagement FanOffWhenSuspend this one option, we can see for yourself. Third into suspend mode. So, now control their own computer to check it.
Case 4: CPU frequency common faults
Failure phenomenon: a computer’s CPU for the AthlonXP1600 +, after the BIOS boot appears as 1050MHz, but the normal should be 10.5 AthlonXP1600 + FSB = 1400MHz frequency multiplier t133MHz. In the BIOS can only be found in the maximum FSB set to 129MHz, disassemble motherboard DIP switches found transferred to a 100MHz FSB, so will the tone for the 133MHz FSB, black screen after boot, CPU fan is operating normally. repeated several times were so, then DIP switches on the motherboard then all transferred to Auto, the By default, the system self-test still 1050MHz. suspected memory and graphics cards, which are not synchronized, reducing the memory CAS from 2 to 2.5, still not normal self; in turn changed 2X 4X AGP graphics card from the mode boot normal. Failure Analysis : later proven that this older version of the user’s card, the default AGP frequency is 66MHz (at 100MHz under, PCI operating frequency for the 100d3 = 33.3MHz, AGP is PCIt2 = 66.6MHz, 133MHz FSB in the next AGP frequency 133d3t2 = 88.7MHz), used as AthlonXP 133MHz FSB, AGP operating frequency then increased to 88.7MHz. Therefore, the display card is for the black obviously, will reduce the frequency of card, the system returned to normal. I often As seen on the network CPU frequency is not caused by normal faults, some early Pentium Ⅲ or Athlon 100MHz FSB motherboard is the default, and now the core of the new 133MHz FSB CPU are. that the motherboard automatically detect the situation, CPU frequency of use have been reduced, generally tend to not be found. encountered such a situation as long as the adjustment of FSB and the memory card or asynchronous work can.
Case 5: Mystery of computer performance degradation
Failure phenomenon: a Pentium4 computer performance in the initial period of unusually stable, but then seemed infected with a virus, a significant decline in performance, and occasionally crash with the phenomenon. The first to use anti-virus software, no killing was found. Then suspected excessive disk fragmentation caused by with Windows, Disk Defragmenter to finish, the problem remains. they think Windows has problems, format reinstall the system, still to no avail. to open the case found that CPU heat sink fan problems after power does not turn. Replacement Radiator , troubleshooting.
Failure analysis: The original Pentium4 processor core with a thermal monitoring system, it will continue to test the temperature. As long as the core temperature reaches a certain level, the system will reduce the processor’s operating frequency, until the core temperature to a safe limits of the following. This is the real reason for decline in system performance. At the same time, this also shows the Zhong Yao radiator, radiator recommended Youxian consider some brands, but also You Dengjizhifen Tamen, Zaigou Mai should pay attention to Qi can support the maximum frequency is the number of CPU, and then the other fill a prescription based on their own CPU.
Case 6: Continuous reboot the host
Failure phenomenon: a mistake CPU heatsink buckle knocked off. Then as it was installed. Re-installed fan power-up evaluation, results of the just-machine, the computer automatically restart. Check other parts no problem, should be in accordance with general experience is the thermal part of the problem. motherboard may be automatically detected CPU overheating, automatic protection. but repeated checks thermal grease and heatsink no problem, reinstall the back or a restart. Genghuan Le cooling fan, everything OK. Is radiator problems, finally found after repeated comparison, the original is the buckle against the direction of loading, resulting in heat sink in contact with the CPU core of the gap, CPU overheating, causing motherboard restart protection. the original CPU cooling fan installed properly, will result in Windows automatically restart or fail to boot.
Failure Analysis: With the integration process and continuous improvement, CPU core fever is a more serious problem, so right now the CPU cooling fan demands more and more. Anzhuang improper cooling fan problems which have arisen 相当 general and frequently. If you are using a Pentium4 or Athlon like the CPU, please select the excellent quality of CPU fan, and be sure to pay attention to proper installation methods. reboot the machine or mild cases, severe cases, CPU burning.
Conclusion: The above-mentioned fact that these faults are not dreadful, mostly caused by user carelessness. Common faults mainly concentrated in the heat and the frequencies, .. just watch carefully you can avoid similar problems.
Without electricity, really bad motherboard do?
Our computer maintenance course, always encounter this problem: a computer after pressing the power switch and what movement did not, the fan does not turn the power indicator does not light. This situation we have encountered a lot, first check power, then check the motherboard, using the smallest systematic, add the components one by one. check to which parts, the above situation, it shows a problem with this component. some time ago, I met with the board to not power up problem thorough investigation to go, power is good, the motherboard is good, and even CPU is bad.
CPU can also lead to bad motherboards without electricity? Is the case, a client computer to send to the company, said that the computer is broken, can not be switched. The host with electricity, does not boot. First of all disconnect the power plug short-circuit the Green Line and the Black Lands, the power supply is working correctly. use the multimeter test voltage output from various quarters, but also normal. Power is no problem. and then using minimum system method, unplug the memory, CPU and graphics card, sound card, hard drive, optical drive, floppy drive, only Power-on the motherboard. Results press the power switch, motherboard without any response. Zai forced Jia electricity, 还是 not be put on the power, motherboard bad Liao, too simple. Fortunately, Ke Hu Mai Ji Qi’s not long, Jiudao warehouse to a new customer to replace the board. 3 next five to two, I’ll machine it installed, connected and power, power. unexpected, and just look at the situation, or what movement did not. The new board can not be bad? This is how it? I carefully checked the CMOS discharge jumper on the motherboard, in the \No, like a bad motherboard, except in some exceptional 3D board. no way, I took the machine apart again, and then one by one rule out the minimum system method. alone to board power, normal, motherboard no problem. plug in CPU, power-up, no response. CPU bad? to plug in the other CPU on the motherboard can not power up. computer’s fault really strange, CPU can short-circuit!
Tip: We repair computers in the process, .. sometimes encounter indicator light on the motherboard, but can not be switched in the case, can be forced on board power, use a wire with a plastic sleeve, dark green direct short circuit, so that board is not After boot you can direct power supply circuit. if the host starts normally, indicating the circuit on the motherboard boot problem, we can add the power switch, a direct short circuit of the contingency approach green black, without having to replace the motherboard, can save a lot of expenses.
If the board is still without electricity, but the fan working, the host does not start, motherboard problem more serious note, it would only replace the motherboard can be solved.
Using Hyper-Threading CPU performance is not ideal culprit
Q: My PC configuration is as follows: P42.4CGHz, elite 845PE motherboard, Maxtor 120GB hard drive, Colorful popular 5700UltraCF Platinum Edition graphics card (driver website in the 56.64WHQL Colorful official version), Kingston 256MB124DDR400 memory. Why use supporting Hyper-Threading CPU, the performance of the same configuration of the computer than the other worse?
A: do not know what operating system you use, because Hyper-Threading Technology requires not only hardware, but also need support to achieve the operating system. At present, only Win2000 (SP4 to install the latest patches), WinXP and WindowsServer2003 can support Hyper-Threading CPU, while the Win98/Me/NT can not support this technology. If you do not support Hyper-Threading Technology Hyper-Threading feature open operating system, then the computer’s performance can not increase, but may be lower.
If you are using Intel845 series motherboard support Hyper-Threading Technology CPU upgrade, this time though will be prompted to find new hardware and automatically install the corresponding driver, users can continue normal use of the original system, but this time the system is not really open CPU Hyper-Threading feature.
Why start a period of time after the restart
Q: I have a computer, CPU is P42.4GHz, ASUS P4B533X board, HYDDR256MB memory, DiamondMax 80GB hard drive, HASEE GeForce2/64MB/DDR graphics card (this card with no fan), 350W power supply. The recent emergence of this computer Failure to use a period of time, the chassis will be very hot, turn a bit longer, it will lead to restart the computer, what is the reason you cards?
A: The graphics card is not necessarily the problem, GeForce2 graphics card is not much heat. But certainly the failure computer cooling and computer related, more likely to be CPU heat problem, I suggest you replace the CPU fan, and careful use thermal grease. In addition, you can try the case lids lifted, if the crash can be determined is the issue of mitigation case cooling is insufficient, to strengthen the chassis cooling, you can try to add the chassis fan. motherboard Northbridge chipset should also pay attention to cooling, overheating will cause crash if. With summer here, especially on the computer CPU heat dissipation we can not be taken lightly. should pay attention to the following questions: should use a good CPU cooling fan performance, such as turbo-fan, high-speed ball bearing fan solution. In addition to CPU cooling, cooling for the entire chassis should not be ignored, the volume should be large, well-designed chassis, and the best chassis to install a second fan. must use thermal grease. because the current CPU core getting smaller and smaller lead to more focused heat, so the use of thermal media or thermal effect is very affecting.
Clever problem-solving solution of the opportunities to find fault
CPU
CPU failures are generally the following: thermal failure, restart the fault, a black screen failure and overclocking failure.
1, CPU-pin connection is bad, cause the machine can not start
Generally manifested in the sudden can not boot, no screen display signal output, excluding cards, displays no problem, unplug the plug on the motherboard’s CPU, carefully observe the no burn marks, but just can not light up the machine. CPU pins were later found black, hair green, with traces of oxidation and rust, then on the CPU pins with a toothbrush to do the clean work, then the problem will be solved.
Reason for failure may be due to cooling the surface temperature of the chip-chip drop too low, the low end than the dew point, resulting in long CPU work in wet conditions. The bare copper pin in this environment and react with oxygen in the air generated rust. accumulating too much rust causing poor contact, causing failure. There are also some bad motherboard, CPU socket because of poor quality will result in poor contact, have a lot of information on this issue, the best way is to yourself installed and fixed CPU!
Second, CPU Suspend mode causes burning
Generally will not cause the system hang and CPU burning, the system will automatically reduce the CPU working frequency and fan speed to save energy. The cause CPU Suspend mode were burned, after all is overclocked CPU. All these are caused by the fan stops running The. motherboard except monitor chips can monitor fan speed, the others still in the system into Suspend (suspend) power-saving mode automatically reduces the fan speed or even completely stop functioning, this is a well-intentioned, can be power, but also can extend the life of the fan and use of time. the last CPU is idle, the heat is not high, so the fan does not turn, rely on heat sinks can cope with heat. But now the CPU frequency is too high, even into the suspend mode, the time when the fan does not turn, CPU heat will be hot.
This board will not occur in every block, occurs must meet three conditions. First of all, CPU fan must be a 3pin fan, this will only be under the control board. Second, the board’s monitoring function must have FanOffWhenSuspend (enter link fan power from the model that is close), and the default for this function On. Some motherboards default On, and even there some setting in PowerManagement FanOffWhenSuspend this one option, we can see for yourself. Third, entry Suspend mode. So now is the control bar to check your computer.
Third, \In such a case the book read: The desktop Celeron Ⅱ 566 processor running at standard frequencies (no overclocking), through the hair dryer heated to 55 degrees Celsius (using the motherboard temperature monitoring functions are), as long as the procedures for running CPU occupancy rate a council on the crash; while the Celeron Ⅱ 566 overclocked to 850MHz, the system temperature is 50 degrees Celsius, more than 10 minutes before running QuakeIII crash. estimated time temperature has exceeded 55 degrees Celsius, while the core temperature by measuring,
Found to have reached 86.4 degrees Celsius. Was later discovered that CPU is running at such a low temperature was almost destroyed.
This is the motherboard detects CPU temperature confuse us. In fact, the report of the CPU Desktop Board temperature is not their core temperature, because the common desktop board temperature sensor and the CPU is simply not CPU heat sink, or contact measurement only the air temperature near the CPU. This appears to cause a lot of CPU temperature in case of fire. from the published data show Intel, Pentium Ⅲ 550E temperature limit at 85 degrees Celsius, Pentium Ⅲ 800E of the limit temperature at 80 degrees Celsius. If we loss of vigilance, partial report of the letter board that their CPU is also running in the low temperature state, a serious mistake.
However, this difference does not appear laptop, notebook is used on the CPU temperature thermistor, temperature measurement points in the bottom of the CPU, if the direct reading, the temperature not so high, and its display monitor temperature Jing Guo a correction, higher than the measured temperature, thus closer to the CPU’s core temperature. so most of the test notebook CPU core temperature is the temperature, low temperature burning CPU will not be the case.
4, CPU frequency common fault
There is a computer CPU to AthlonXP1600 +, after the BIOS boot appears as 1050MHz, but the normal should be 10.5 AthlonXP1600 + FSB = 1400MHz frequency multiplier t133MHz. In the BIOS can only be found in the maximum FSB set to 129MHz, disassemble find motherboard DIP switches transferred to the 100MHz FSB, so to adjust to 133MHz FSB, black screen after boot, CPU fan is operating normally. repeated several times were the case, then the DIP switches on the motherboard then all the notes of Auto, the default , the system self-test still 1050MHz. suspected memory and graphics cards, which are not synchronized, reducing the memory CAS from 2 to 2.5, still not normal self; in turn changed 2X 4X AGP graphics card from the model, boot back to normal.
Fault analysis: proven later, this older version of the user’s card, the default AGP frequency is 66MHz (at 100MHz under, PCI operating frequency for the 100d3 = 33.3MHz, AGP is PCIt2 = 66.6MHz, 133MHz FSB in the next AGP frequency is 133d3t2 = 88.7MHz), used as AthlonXP 133MHz FSB, AGP operating frequency immediately upgraded to a 88.7MHz. So, obviously the graphics display which is black, will reduce the frequency of card, the system returned to normal . on the web to see the CPU frequency due to abnormal failures, or some early Pentium Ⅲ 100MHz FSB Athlon motherboard is the default, and now the core of the new 133MHz FSB CPU are. that the motherboard automatically detect the case , CPU frequency of use have been reduced, generally tend to not be found. encountered such a situation as long as by adjusting the FSB and the memory card or the work can be asynchronous.
5, computer performance degradation
If the P4 computer performance in the initial period of unusually stable, but the performance was significantly decreased, with the occasional crash phenomenon. So if you use antivirus software, no killing was found, with Windows Disk Defragmenter to organize is also useless, format reinstall systems are still not, then please open the case to replace a new radiator.
P4 processor’s core with a thermal control monitoring system, it will continue to sense temperature. As long as core temperature reached a certain level, the system will reduce the processor’s operating frequency, the core temperature Hui Fu Dao Zhi Dao Yi Xia safety limits. This was the system Xingneng real reason for the decline. Meanwhile, it also shows the importance of the radiator, radiator recommended priority of some brands, but they also have different grades, the purchase should pay attention to the CPU can support a maximum frequency is the number, then according to their own CPU
Other economic officials.
6, constantly reboot the host
CPU heat sink a mistake buckle knocked off. Later, as it was the buckle on the back fin. Re-installed fan power-up evaluation, results of the just-machine, the computer will automatically restart. Check the other parts no problem, according to experience should be part of conventional heat problem. motherboard may be detected CPU overheating, automatic protection. but repeated checks thermal grease and heatsink no problem, reinstall the back is a restart. replace the cooling fan, everything OK . Is radiator problems, finally found by repeatedly comparing the original buckle direction is installed backwards. The result was the core part of the CPU heat sink in contact with the gap, CPU overheating, motherboard detection CPU overheating, restart protection. the original CPU cooling fan improper installation will cause Windows automatically restart or fail to boot.
CPU process and integration with the continuous improvement of core fever is a more serious problem, so the current CPU cooling fan on the increasingly high demand. Cooling fan problems caused by improper installation is quite common and frequent. If you are using a Pentium4 or Athlon like the CPU, please select the excellent quality of CPU fan, and some attention to their correct installation methods. reboot the machine or at worst, while in CPU burning.
The above-mentioned fact, most of these failures are caused by their own carelessness, common faults mainly concentrated on two aspects of thermal and frequency, can be as careful as long as you can to avoid similar problems, what hardware actually very simple principle as long as find opportunities ..
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Chapter board failure
Computer work for some time on the black
Q: The computer’s configuration is: P41.7GHz, i845GL motherboards, graphics cards and sound cards are integrated, installed Win98 and WinXP dual system. Recently, the computer work for a period of time, the display will suddenly did not show the hard disk light flash and crazy \; Di Di Di \Answer: According to the phenomenon of the computer’s configuration and fault analysis, lead to the failure of the main reasons may be two, follow the following tips each of
Excluded:
1. 845GL motherboard shown as part of the integrated North Bridge chip, this will result in the North Bridge chip, great heat, at this time if the North Bridge chip, the measures taken by improper cooling, then the high temperature would lead to the built-in protection circuit chip start, resulting in the output of the fault did not show. Check whether the installed chipset North Bridge heat sink and fan, if not to consider increasing the set. If so, please double-check with the North Bridge heat sink is a good contact between the chip, heat Fan rotation is normal.
2. Need to take up part of the integrated graphics memory as video memory, therefore the quality is good or bad memory will directly affect the display, but this happens mostly when the phenomenon mainly Huaping, occasionally black screen failure occurs, Replace the memory good quality brand to try.
NIC conflict led to the failure
A while ago, my PC no longer unbearable high load, multiple capacitors in a row after ringing off the hook, and finally not working properly. So I put all the motherboard and chassis and the power to sell, put a new motherboard and power supply to get better stability and longevity. Due to resource constraints, chose an integrated network card ASRock KT400A motherboard. evening, his family happily \, at the computer is no longer belongs to me. To this end, I gave the computer coupled with a pair of cards, in addition to an integrated network card on the motherboard, I have also inserted a piece of gold waves REALTEK8139 card, so I can use a laptop online . But the night his family just the Internet, the network will break up, Dad said computer \invalid, the result had to cold start.
I think the problem is software, then reinstall the chess room of the client, the problem remains. I reinstall the WindowsXP and Windows2000 dual system, update the motherboard BIOS, and video drivers for the upgrade. But the problem still occurs, regardless of In still under WindowsXP or Windows2000 problem. Since the network-related, and then consider the network card problems, I block out an independent card, everything normal. I put this piece of card sent to the students there, resulting in the use of completely normal . Finally, I changed one other brand of card, and my system re-composition of the card, the problem is gone. what the outcome here, in fact, this relatively simple faults, is the gold card and the onboard NIC wave-induced failures in conflict .
Why does not the video drivers installed
Friends, there is some problem love machine, called to say a charm yesterday, today, computer starts, the desktop icons have become large, and also a shake, and open the page color is difficult to see. A friend said that a , I know his computer graphics drivers have a problem. I let a friend re-install the graphics driver, behold than an hour, a friend called to say it is not only is not installed on the drive, there is always at the start Shihuan dialog box that is the current display mode error.
I rushed to a friend home, with a view really is as he said. I restore the registry to a previous state, restart the machine, the error dialog does not exist so I began to install video card drivers after installation does Wuxiao, and restart the computer after an error occurs current display mode dialog box. I used GHOST to backup to guide them before, still the same, to see that this is the video card driver is not installed.
Helplessness, after formatting the C drive to reinstall WindowsXP system, but half will be installed to the blue screen, which I can turn blindsided. But still in line with the principles from soft to hard, I enter the BIOS one by one See, also did not find any incorrect changes. virus protection is also closed, the graphics card BIOS buffer are closed, the system BIOS buffer is to open the general circumstances in which this opening is not installed the system impact, but in order to test test, it also shut down, behold WindowsXP installed still the same. installation disk is absolutely no problem, I would like to instrument allows finished, certainly there is a problem of computer graphics.
Friend’s computer is i845GL chipset motherboard, video card and sound card are integrated, so I think must be a motherboard problem. The second day I brought a friend to a friend installed the same motherboard, Who knows the problem is still the same loading WindowsXP , I am compelled once again to install Windows98. Windows98 installed when all goes well, but to install the video drivers, the old problems have emerged.
Desktop icons or big, see the answer is not installed on the graphics driver, I downloaded the latest drivers did not help, then install the driver several times that the wrong display mode after another has emerged. Motherboard seems to be no problem, Could be memory issues? CPU rarely cause this problem. memory is not installed on the system in question, including the blue screen is possible, but this video card driver is not installed on the question Is is it? I hold the final replace the one ray of hope and memory, Who knows really solved the problem, whether it is installed video drivers are installed WindowsXP or to normal.
General system memory problems may be blue, or registry error, or is often illegal operation of the machine. But the memory is not caused by graphics card drivers installed on the same time, prompted the current display mode is the first time I encountered the error …

computer memory as one of the five components, work on the stability and reliability of the computer plays a vital role. memory, good or bad quality and reliability of the computer can directly influence the long time stability working. while the memory components is one of the highest failure rate, we usually repair process on the computer failure, contact with most often said is \memory performance and the reasons for failure summed up, for your reference. 1, the most common faults: memory corruption, leading to the boot memory alarm
We often encounter such a failure, mostly the night before was all right, the next morning a start, is not usually hear the \go on, and no image display monitors. This failure most of the time because the computer’s use of the environment is not good, humidity is too large, in the long process of using the memory of finger surface oxidation, resulting in memory and memory slots cheat The contact resistance increases, current through the obstruction, so the memory self-test error. startup on the performance of a \>
Approach is simple, that is, remove the memory, the memory use of rubber on both sides of the finger carefully cleaned, and then plug back to the memory slots on it.
Note: In the scrub finger, the finger must not direct contact with hands, because hands sweat will be attached to the finger, in use over time will again result in finger oxidation, repeated the same failure. However, such there are several other reasons for alarm memory:
One. Memory and motherboard compatibility is not good to plug in the other board memory, long-running stable and reliable; to insert the fault of other memory on the motherboard is also stable and reliable operation, no alarm occurred. But put the two together, it appears \2. Motherboard’s memory slot to replace the poor quality of the performance of various brands of memory are there, \three hundred dollars in low-end motherboard, the reason is the low price of the motherboard, using the poor quality of the memory slots, can only replace the motherboard to resolve .3. memory chip failure of such failure in a relatively more serious, since the boot check the memory when the host can detect errors defects, not through self, issued a \; Didi \4. Other failures caused by such failures are not common alarm memory, there may be motherboard failure or CPU failure, caused by the memory police, can only be replaced one by one elimination solution. Second, common faults 1: Memory corruption leading to frequent reporting system registry Error
Such failures are more common, the performance of the system to be able to start properly, but entering the desktop, the system will prompt registry read error, Xu Yao re-start Diannaoxiufu Gai error, but Zaici Hou start the computer, the fault is still the same. For the Ci kind of problem, we can enter safe mode, run the knock \The problem really is caused by the registry errors; If the fault still exists, essentially conclude that the memory of the machine in question, then need to use the replacement method, replace the memory modules 性能 good test the existence of the same fault. There time for a long time without disk defragmentation, error checking when Mei You will Zaocheng system error Er prompt registry errors, but for such a ban Yun Xing Wen Ti \significantly slower. For such problems, the best solution is to back up your important data, then re-install WIN98.
Third, common faults 2: memory corruption when prompted to install the system led to \Such failure is common in the process of installing the system, often unexpected exit the installation. In fact it often is because the memory of poor quality or poor stability caused by the replacement of memory, most of the problems troubleshooting in. Such problems either directly from the CD-ROM installation, or install from the hard disk will appear the same message. Though a bit like us to install WIN98, WIN2K and XP process do not work to read a file, select \That kind of problem mostly because of poor quality or CD-ROM drive to use time too long, read the disk performance degradation caused by the same time, there will be light slow flash drive, and accompanied by intermittent read the disk when the \If we are in the maintenance of computer failure process encountered this problem, Zuihaozhijie Genghuan memory Jiance, to see whether the same Guzhang still Chuxian. Ru fault Xiao Shi, shows there are problems Yuanlai memory; If the fault remains, Duoshu yes Yinweiguangpan Zhiliangcihuo due to reduced drive can read the disks may also be installed on the hard disk file system damage.
4, the memory circuit can cause the system to power up this memory corruption was more serious, but the memory chip surface, cheat, RC is not necessarily obvious burn marks, and sometimes exactly the same note, and good memory. But this memory is inserted motherboard, the motherboard can not power up. When the power supply into a power plug, press the power switch, the host without any response, CPU fan and power fan not working, power light is not bright, and not exactly the same when in power. fault discriminant is also very simple to use exclusion and minimum system method. If you encounter such a host is the fault phenomena, the first step is to rule out the power failure, if the best hands of any other normal power supply, direct replacement. If not, can Remove the power supply with wires directly to the Green Line and the short black lines, observed power supply fan is working, and ears to listen carefully to supply it within the creak of the abnormal sound. If there is a problem with the power description, unstable and needs to be replaced. s Second step is the sound card, Modem, hard drive, optical drive, floppy drive, video card, memory, CPU all removed, leaving only the CPU fan, and then insert the DEBUG card (If not, then to be seen whether the CPU fan and power supply fan rotation), began on board power to observe DEBUG cards and digital tube lights have instructions; and then insert the CPU, power-test machine; then reinsert the memory, step by step to add other components. If the above occurs when a component failure phenomenon, it shows that the component which Wen Ti, need to be replaced or repaired. this method to the exclusion of slow boot, crash, also apply. 5, Sunhuaidaozhi system memory to run unstable, Jingchangchuxian Lan Ping Huo Wu Fa normal Shunlianzhuang system, Total non-regular file read or extract the error prompts for such problems, should first be ruled out software problems. a first step, important data on the C disk backup, and then use the \command on the C drive to force the full format, and carefully observe the formatting process, whether the format successfully, the hard disk have bad sectors. because the hard disk damage system files will be destroyed, resulting in unstable system operation, easy to hang. 2nd step, re-install the operating system, and observe whether the installation process can not open a file, file not found like the Cuowu. If not, Description Hardware essentially no problems in system instability, prone to crashing, very prolonged use may be the system, there is no regular disk scans and defragmentation, system files caused by excessive loss or damage, and cause the system can not be normal and stable work. If the installation process in the blue screen, you need to use the exclude method, memory and CPU to replace the rule. in the replacement of CPU and memory is still time after the failure, it must replace the motherboard to check.
Note: Some drives read the disk performance is very good in the use of two or three years, or \If the data is used to play VCD, it will not have a particularly big impact, but these drives read the data used to install the system on the above may appear very similar to the error, report or extract file not found error even if occasionally successful installation, but also often \6, memory corruption, leading to frequent reboot the computer can not function properly
For such failure, the first direct replacement of memory to see whether the fault is also still there. If the fault disappears, we can determine a memory failure. If the malfunction persists, it would need to press the fifth troubleshooting method, re-install the operating system, inspection is not due to systematic causes.
Automatically restart the computer failure causes are more common is the lack of electrical power. When the computer is working at full capacity, power consumption is large, it is easy to automatically restart. There is the electricity voltage instability, changes in scope or too much electricity outlet will also have the computer automatically restart poor contact failure. but the memory corruption caused by computer automatically restart after the failure is rare.
7, memory corruption can lead to system starts running, fast access to the desktop automatically shut down when the problem demands a fault in the fifth exclusion solutions. Tip point: because the WIN98 system themselves, the operating system is more susceptible to destroy. If we C: \ WINDOWS \ FONTS directory name changed to other letters, then when you restart the system, the system will be in the blue sky appears, the faster access to the desktop automatically shut down. The solution is also Simple, start holding down the \twists and turns, wasting a lot of time, as the computer service personnel should understand the principle and some of the operating system starts the main document.
8, memory corruption leading to wild drive read this kind of problem I encountered twice, were exactly the same performance. As long as a boot, self-test after a fast access to the system, the drive began to \it into the CD you do not turn and scary. in self-test process and no errors, but after using the substitution method to replace the memory fault disappears. the failure of memory on the other machine (different motherboard) , turn it on, \9, memory corruption, but the host does not power up after the alarm, it does not start
Fault machine: motherboard is Soltek SL-85DR-C (845D), CPU is PIV1.6G, graphics for the GForce2 Ti 64M, RAM Kingston DDR 128M, Maxtor hard drive to 40G. Fault phenomenon: the host can power up, press Under the power switch, CPU fan, graphics card fan rotation, power light, hard drive indicator light, but does not start correctly \Troubleshooting: a closer examination reveals there is a special phenomenon, insert DEBUG card, power up, the show \was electric, at this time \The most effective, first remove the memory, power-test machine, then the host will ask, and consecutive \64K) check failed. This is different from ordinary memory alarm continuous \Testing machine was plugged into the memory table, a boot that is continuous, \10, memory problems, but after boot is the eight consecutive short sound \We usually encounter the memory police are \sound of a group of eight. In my first experience of such failure, do not know the reason, because the system does not start, only to use DEBUG card and found that error code indicates that the memory, it then replace the law found to be a memory problem . to the memory board plugged into the other, suggesting that the errors that we often encounter a continuous short \For PC, using a generic card, repair them very simple, just follow the \is in the maintenance process, we must always sum up, the usually write down their problems, and found that the law can acquire new knowledge, more progress.

more complex computer motherboard, a relatively high failure rate, failure phenomena more complex distribution is more dispersed. are summarized below: (1) a variety of cable short circuit, open circuit fault line should not pass Department of connection short circuit, the pass disconnect the barrier; IC chips, resistors, capacitors, transistors, inductors and other components pin off, short circuit, breakdown; connection, pin and power ground short-circuit conduction; printing plate line break, short circuit and welding set off, etc.. These are the common faults.
(2) DMA controller and DMA controller circuit fault supporting more powerful, higher failure rate; auxiliary circuit chip and the input signal circuit is also prone to failure .3) RS-232 serial interface controller PC, the serial fault line interface controller has an independent, also with other interfaces combined. serial interface high failure rate. (4) clock controller, bus controller failure clock controller, bus controllers, bus drivers, control commands chip , are possible failure. (5) memory chip RAM memory chip failure are more PC machine, high efficiency, the chip itself has a higher failure rate.
(6) data bus fault in the motherboard CPU, memory, I / O device data bus, the bus buffer register / driver, which have different degrees of fault. (7) address bus fault performance of the motherboard in the CPU send address The address bus, the address latch and address of the buffer register / driver, etc.. (8) memory control signals and address generator circuit fault that RAS / CAS row / column address strobe, row / column address control signal and the line delay / column address circuit error. (9) a socket, pin loosening that chips such as poor contact with the socket failure due to corrosion, oxidation, decreased flexibility, pin loose weld, fracture and failure caused by poor contact switch. (10 ) I / O channel slots fault that I / O channel slots in the copper loss, decreased flexibility, short break then, pins Weld, loose soldering, dust caused by too much or fall into foreign failures. (11) special circumstances that caused the failure by the impact, earthquake, shock, voltage suddenly increased load is not matched or design fault caused by unreasonable, as a result of the installation, setup and use human failure caused by improper. timers, counters , interrupt controller, parallel interface controller chip will also have problems, but the failure rate is generally low.
(12) power controller general power output controller fault current is higher, heat capacity, if the control chip or integrated block of poor quality or poor heat dissipation, a higher failure rate. And its surrounding long-term work for the power filter capacitor In the high temperature will result in failure because the dry electrolyte, which led to increased power output of the ripple caused by board job instability. network.I not produce a piece of board, of which 60% of the failures cause motherboard can not boot work; 35% of the fault will not work correctly motherboard; another 5% of the particular random failure, the performance of state of instability for the motherboard.