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Reprinted from 373801420 at 02:22 on September 11 2010 read (loading . ..) Comments (0) Category: Personal Diary
1: motherboard failure
2: Graphics fault
3: sound card trouble
4: hard disk failure
5 : memory failure
6: drive failure
7: Mouse trouble
8: Keyboard failure
9: MODEM failure
10: printer problems
11: Display fault
12: recorder malfunction
13: Scanner failure
14: Display jitter causes
15: Troubleshooting BIOS settings
16: Restart the computer failure
17: CPU utilization is too high to resolve the problem
18: Discovery of hard disk damage and repair
19: malicious Web page code manual processing
20: Common Faults and integrated sound solution
21: USB storage device does not recognize
22: black failure
23: WINDOWS blue screen code lookup tables
24: WINDOWS Error Code Complete
25: BIOS self-test and boot failure problems
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Here Quick and related failures to solve the problem
computer malfunction that appears confusing, elusive. And the components of the Windows operating system is relatively complex, computer event of a failure, for the average user, you want to pinpoint the reasons for its failure is almost impossible. So it is that if we encounter when the computer failure, completely helpless out? This is not so, the computer-generated although there are many reasons for failure, but if we look carefully, conscientiously sum up, we can still have some computer failures of the law and treatment approaches. In this pamphlet, we will some of the most common and most typical computer fault diagnosis, maintenance methods to show you, through it, you 'll find - addresses a method of computer failures at your side, simple, but effective!
one motherboard motherboard
key component of the entire computer, the computer plays a vital role . If the motherboard malfunction will affect the work of the entire PC computer system. Here, we take a look at the motherboard in the course of which the most common faults.
a common fault: boot no display no display
computer boots, the first thing to check is a BIOS. Motherboard BIOS, the hardware store important data, while the motherboard BIOS is part of the more vulnerable, easily damaged, once damaged it will cause the system can not run, the recurrence of such failures are generally due to the motherboard BIOS damage caused by CIH virus (of course not rule out the motherboard itself, cause a system failure can not run ..) General BIOS hard drive after the virus destroyed the data will be lost, so we can detect the hard disk the data is intact to determine whether the BIOS is damaged, if the hard disk data intact, so there are three reasons why the phenomenon of power no display:
1. because the motherboard or expansion card expansion slot problems, leading to plug in expansion card, such as sound cards, etc. without the display board is not responding.
2. motherboard jumper settings in the CMOS in the CPU frequency does not, it may lead to not show fault, which, as long as the clear CMOS to be addressed. Clear CMOS jumper on the motherboard usually near the lithium battery, the default location is generally 1,2 short, just short of his conversion to jump a few seconds for the 2,3 to solve the problem, the old motherboard for the past can not be found should the user to the jumper, just remove the battery, enter the CMOS settings to be displayed after the boot off, will go up also reached the CMOS battery discharge purposes.
3. motherboard does not recognize the memory, memory corruption or memory does not match the boot no display can lead to failure. More selective in some older motherboards memory, once the plug in the motherboard does not recognize the memory, the motherboard will not start,
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for the failure of the motherboard BIOS is damaged, we can plug in the ISA card to see whether the display (If prompted, can prompt steps below.), if not the boot screen, you can own Automatic Updates BIOS to do a floppy disk, reload the BIOS, but some motherboard BIOS is damaged, the floppy drive did not work this time , try using hot method to solve (I have tried, as long as the BIOS the same at the same level of motherboards can be successful writer ..) But the same hot-pluggable addition to the need BIOS things, the motherboard may cause some components to damage, so a reliable method is by writing code device file is written to the BIOS BIOS inside (this service can find a safer computer vendor solution.)
Troubleshooting II: CMOS settings can not be saved
such failures are generally due to insufficient battery voltage caused by the motherboard, which can be replaced, but some board battery replacement also can not solve the problem, at this time There are two possibilities:
1. motherboard circuit problems, which are looking for professional service;
2. motherboard CMOS jumper problem, sometimes because of the error will jump on the motherboard CMOS line is set to clear the option, or set to an external battery, making the CMOS data can not be saved.
Fault Three: In Windows, install the motherboard driver CD-ROM drive read the disk after a crash or slow down the phenomenon
in some no-name motherboard sometimes such a phenomenon,
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Troubleshooting four: Install the Windows or start Windows when the mouse is not available
software such failure occurred because the error is generally caused by the CMOS settings. Power management settings in the CMOS has a modem use IRQ field projects, and his options are 3,4,5 ......, NA, generally it is the default option is 3, set it to 3 other than items can be interrupted.
five common faults: frequent computer crashes, during the CMOS settings will appear the phenomenon of death
Dead phenomenon happened in CMOS, usually the motherboard or CPU have problems, should the press law can not troubleshooting, it can only replace the motherboard or CPU.
recurrence of such failures are generally due to a problem with the motherboard or the motherboard designs Cache heat caused by bad, I had found in the 815EP motherboard is not good enough for the motherboard heat caused by the failure phenomenon. Touch the CPU after the crash around the motherboard components, found that the temperature is very hot. After replacing the high-power fan, crash failures can be resolved. Cache problem for the failure, we can enter the CMOS setup, the Cache can fix the problem after the ban, of course, Cache ban would certainly be an impact upon the speed.
Troubleshooting Six: board COM port or parallel port, IDE port failure
the recurrence of such failures are generally due to causes related hardware hot plug the user, the user can use this time instead of multi-function card But in lieu must be prohibited before the COM port on the motherboard comes with the parallel port (some motherboards with IDE ports to be banned for proper use.)
graphics
a common fault: boot no display
such failures are generally due to poor contact with the motherboard or graphics slot motherboard causing problems. For some integrated graphics motherboard, main memory if the shared memory, you need to pay attention to the location of memory, usually in the first memory slot should be inserted in memory. Causes the graphics card no display power failure, power is generally given after a long, two short beeps (AWARD BIOS for the card is concerned).
Fault Two: Show Huaping, blind to the handwriting
such failures are generally due to high-resolution monitor or video card does not support caused. Huaping startup mode can be switched to safe mode, and then again in Windows 98 into the display settings , select the state in 16 colors Restart in normal mode Windows 98 system, delete the graphics drivers, restart the computer. Or not to enter safe mode, in a pure DOS environment, edit
SYSTEM.INI file, display.drv = pnpdrver to display.drv = vga.drv, the Save and exit, then drive in Windows to update the
program.
three common fault: color display is not normal, such failures are generally the following reasons :
1. graphics card and monitor signal line is bad
2. display their own fault
3. In Some software to run when the color is not normal, usually common in older machines, there is a check in the BIOS,
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4. Graphics damage;
5. display is magnetized Such phenomenon is generally due to magnetic objects can be caused by too close, magnetized may also cause the display appears deflection phenomenon.
Fault IV: Death
the recurrence of such failures are generally more common in non-compatible motherboards and graphics cards or motherboards and graphics cards bad; graphics card is not compatible with other expansion cards can also cause crashes.
five common faults: the screen pattern of abnormal noise or
such failures are generally due to problems with memory or graphics cards caused by poor contact with the motherboard . Finger position to be clean or replace the graphics card was
card.
six common faults: lost
graphics driver graphics driver to load and run automatically after a period of loss of driver , such failures are generally of poor quality due to video card or graphics card and motherboard do not compatible, making the graphics card temperature is too high, causing the system to run unstable or freezes, then only replace the graphics card.
addition, there is a class of special circumstances, the previous graphics driver to load, but the graphics drivers loaded into Windows when the crash occurred. To change to other types of cards in loading its driver, insert the old card to be addressed . Should such a failure can not be settled, then the registry failure to restore the registry or reinstall the operating system can be. A common fault
sound: sound mute. There are common causes of this failure:
1. Default output driver is Click the sound icon bottom right corner of the screen (small loudspeaker), appear to adjust the volume slider below the
2. soundcard conflict with other cards. PnP card solution is used to adjust system resources so that all cards without disturbing each other. Sometimes, open the
3. After installing the Direct X sound card is not audible. That this sound card with Direct X compatibility is not good,
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4. one channel silent. Check the sound card to the audio speaker cable is disconnected.
two common faults: excessive noise from the sound card. There are common causes of this failure:
1. Card is not correct. Manufacturing precision is not high enough because the chassis, sound card manufacturer or installed outside the damper caused by bad sound card can not be closely integrated with the motherboard expansion slots, can be seen visually on the card This phenomenon in the ISA card or PCI card has, are common problems. Pliers generally available correction.
2. Active Speaker Speaker input connected to the sound card output. For the active speaker, should be connected to sound card Line out side, it has not been
output signal amplifier on the card, the noise is much smaller. There is only one output card is the Speaker or Line out jumpers on the card depends on the decision, the factory default is often Speaker, so the jumper to disconnect the sound card.
3. Windows comes with a bad driver. Sound card driver is installed, you should select the list box. If you have installed the Windows driver that comes with the optional Installation. Then insert the disk or CD-ROM with sound card, load the driver provided by the manufacturer.
Fault Three: Sound can not I once had a sound card under Windows 98 using the original driver disk to install the driver install does not matter how, and had to replace the use of Creative SB16 driver, everything is normal. Then upgrade to Windows Me, not normal and back with Windows 2000 (full version) comes with just the normal sound card drivers.
2. 's most vexing problems than the Windows 9X Plug and Play device under test has chosen to given a free hand to help you install the driver, the driver side is not used, then, every time you delete out reloading will repeat this, and can not use the Here I reveal a secret detached trick: Go to Win9xinfother directory, the *. inf file on the sound card, delete all and restart manually after installation , this was one hundred percent efficacious, have saved countless lives ... ... of course, sound card, change up table can achieve the same purpose.
3. does not support the PnP sound card installed ( also applies to not use the PnP install the PnP sound card): Go to Windows search for new hardware?
Troubleshooting four: Play CD silent
1. completely silent. With Windows 98's Using a 4-pin CD-ROM audio cable to connect the analog audio output and CD-in on the card can be, this line will purchase CD-ROM included.
2. there is only one channel sound . Optical output signal generally about two lines, the middle two lines to ground. Because the audio signal line 4 line color is generally different, can be found from the color of the line correspond to the interface. If only one interface or sound card and audio cable for each interface does not match the wiring had to change the order of the audio line, usually only one of two lines of the change can be.
five common faults: PCI sound card appears sonic boom
generally because technology PCI card caused by hanging Bus Master PCI bus hard disk read and write, mouse and other operations to enlarge the background noise's sake
. Solution: Turn off the Bus Master PCI card features into AGP graphics card, sound card for the PCI slot.
six common faults: not the normal recording
first check if there is nothing wrong with the microphone jack into the other, and second, double-click the little speaker, select menu see if the settings are correct. Then in the If the
seven common faults: Can not Play Wav's, Midi Wav Music
can not play music phenomenon is rare, often due to One can disable; can not play MIDI files may have the following 3 possible:
1. Early ISA sound card 16-bit mode may be due to 32-bit mode is not compatible with the MIDI playback is not caused by the normal, by installing Software wave table
way should resolve
2. Today, most of the popular PCI sound card with wavetable synthesis technology, if the MIDI playback is not part of it is likely because you do not load the appropriate sound wave table library.
3. Windows volume control in the MIDI channel is set to silent mode.
eight common faults: PCI sound card to use in the WIN98
Some users do not normally reflected in the sound card driver installation process everything is normal, no device conflicts occur, but the following is not in WIN98 aloud, or cause other problems. This phenomenon usually occurs in the PCI sound card, please check the installation process your PCI sound card inserted in the article which PCI slot. Thermal considerations for some friends, like to stay away from the sound card plugged into the AGP slot, near the ISA slot that several PCI slots. The problem often arises here, because there is a Windows98 Bug: sometimes only correctly identified and inserted in the PCI-1 PCI-2 sound card two slots. ATX motherboard in the two next to AGP is the PCI-1 PCI and PCI-2 (the opposite in some ATX motherboard, close to the ISA is the PCI-1), so if you do not have the PCI sound card installed in the correct slot, the problem would be created.
memory
computer memory is one of the most important parts, and its role in doubt, then the memory what are the most common faults it?
a common fault: no display
boot memory because the recurrence of such failures are generally due to memory with the motherboard memory slot is bad cause, as long as smear his finger back and forth with the eraser position to solve the problem (Do not use alcohol and other cleaning), there is memory corruption or a problem with the motherboard memory slot can also cause such a failure.
memory causes the boot no display failure, the host speaker beep usually for a long time (for the Award Bios is concerned).
Troubleshooting II : Windows Registry damage often for no reason, prompted for a user to recover
such as memory failures are generally caused by poor quality, it is difficult to repair, replace only one way.
three common faults: Windows often automatically enter safe mode
such failures are generally due to the motherboard is not compatible with the memory or memory caused by poor quality, common in high-frequency memory for Some do not support this frequency of memory on the motherboard, you can try to reduce the memory within the CMOS settings to see whether the read speed to solve the problem, should not, it can only replace the memory.
Fault IV: random crashes
such failures are generally due to the adoption of several different memory chips, due to the memory of different speeds to produce a time difference resulting in death
machine, which can reduce the memory speed CMOS settings to be resolved within , otherwise, the only way to use the same type of memory. Another possibility is that memory is not compatible with the motherboard, these phenomena generally rare, the other is also possible that poor contact with the motherboard memory computer random crashes caused. 01
five common faults: memory to increase system resources, but decreased after the
such phenomena are generally not compatible with the motherboard and memory caused the high frequency of memory commonly found in memory for some does not support this frequency of memory on the motherboard, such a failure when you try to COMS memory speed will be set too low a little try.
six common faults: some software often runs out of memory prompts
This phenomenon is usually due to inadequate system disk space left, you can delete some useless files, leaving some space that is can be generally maintained at
300M or so.
Fault Seven: Install Windows to boot from the hard drive to detect disk space, memory
prompted such failures are generally due to the user in the config.sys file, add the emm386.exe file, as long as it masked problems can be solved. CD-ROM drive is
computer hardware components in one of the shortest life. In fact, many scrap the drive there is still much of value, just click on it a little maintenance. This often do not have any profound knowledge of radio, do not need anything too complicated to use the repair tools and materials. Just look carefully and with reference to the implementation of the following symptoms of some troubleshooting, I believe you can restore the old drive or the old
a common failure: hard disk drive light is always flashing work
This is an illusion, it is not. Because of the hard disk light flashes and the hard disk drive with an IDE interface connected, the disc also control the hard work the results of light. Drive unit can be connected to a single IDE interface.
Fault Two: In the Windows environment to operate on the CD-ROM to display ROM to a certain extent. Most CD -ROM connected to the IDE hard disk interface is not supported
Windows 32-bit disk access, the Windows generated an internal error crash. After entering Windows, the check box is closed, the confirm, then restart Windows, in Windows, and then access the CD-ROM will not go into error.
Fault Three: drive can not properly read the disk, displayed on the screen:?
In this case, the virus should be detected by antivirus software on the machine to check anti-virus, the virus can not find the file if the editor to open C under the root directory of the CONFIG.SYS if they put up light drivers and drivers are broken, and processing, but also with a text editing software View No issues were found more than two steps, removable drive maintenance.
Troubleshooting four: drive to use when prompted to read and write errors or diskless
this phenomenon mostly in the changer Shihai No place to operate on the drive caused by the fault. for all the operations drive will need to wait for the CD like the bit when the indicator shows the operation can be conducted. In Play DVD when the time should also be transferred to zero and then changer, which can avoid the above error.
five common faults: when playing VCD movies pause or broken screen phenomenon
check the AUTOEXEC.BAT file on MSCDEX.EXE after . If so, you should put
SMARTDRV statement prior to the MSCDEX.EXE; Party not to use high-speed CD-ROM rushed process to SMARTDRV.EXE / U; failure can be ruled out.
Troubleshooting Six: CD-ROM in the read data, read and sometimes not, and the longer the time to read the disk drive
not read the disk hardware failure focused on the laser head assembly, and can be divided into two kinds: one is caused by using long laser tube of the old
; the other is the photocell lens surface is dirty or dirty and displacement of the laser tube deformation. So the power to adjust the laser tube, the need of optical lens tube and the laser tube cleaning.
photoelectric tubes and focusing lens cleaning method is: Disconnect the laser head assembly, a flat cable, remember the direction of the laser head groups apart pieces. then see hooded jacket laser focusing lens, remove the jacket will find that focusing lens from the four fine copper wire connected to the focus, tracing the coil, the optical tube assembly is installed in the bottom of the lens holes in the. with a fine wire wrapped in clean cotton stick a small amount of distilled water (not optical tube with an alcohol wipe and focusing lens surface), and to see whether the level of the lens on the laser tube is suspended, it shall be adjusted appropriately. Thus, the cleaning is completed.
adjust the laser power. in the side of the laser head assembly screws are a little like a cross potentiometer. the use of color and write the initial position, generally the first clockwise 5 ~ 10, installed No re-test machine rotate 5 ~ 10, until a smooth read the disk. Note must not rotate too much, so much power and burned photocell.
seven common faults: boot drive not detected or detection failure
This may be due to drive data cable connector is loose, damaged or the hard disk drive data cable jumper settings error caused by such problems encountered when
waiting, we should first check the CD-ROM data cable connector is loose, and if found not plugged in, it will be re-plugged, plug tight. If this does not resolve the fault, we recruited a new data can be put on line to try. this time if the fault still exist, we need to check the jumper settings CD-ROM, and if there is an error,
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mouse mouse
failure analysis and maintenance is relatively simple, most of the fault for the interface or key contacts bad, broken, dirty mechanical positioning system. a few failures for the internal components or circuit Weld mouse, which are found in certain low-quality products, especially in the light-emitting diode, IC circuit damage to the majority.
A common fault: can not find the mouse
1. mouse completely damaged and need replacement mouse.
2. connected to the host serial port or mouse PS / 2 oral exposure bad, carefully take a good line, re-can start.
3. motherboard serial or PS / 2 ports from getting damaged, this situation is rare, if this is the case, had to replace a motherboard or use a serial port on a multifunction card.
4. mouse line is bad, this is the most common. bad points more in the mouse inside the wire and circuit board connections. fault as long as not another PS / 2 joints, the general is not difficult to repair. usually due to relatively short lines, or compare the mouse lines are messy and hard pulling causes the reason, the solution is to open the mouse, and then use a soldering iron to solder weld. there is a situation that is bad inside the mouse cable is long because of the time result caused by aging, such failure is often difficult to find, replace the mouse is the fastest solution.
two common faults: the mouse can be shown, but can not move the mouse flexibility
decline not as arbitrary pointer, but slow, inaccurate positioning, or simply could not move. This is mainly due to mechanical positioning the mouse scrolling axis in the accumulation of transmission failure caused by excessive dirt, rolling does not cause flexible . maintenance of the internal focus on the mouse X axis and Y axis on the transmission mechanism. The solution is to lock the ball to open the plastic film, remove the mouse ball to roll, with a clean cloth dipped in mild detergent on plastic cleaning the ball, the friction shaft can be cleaned with alcohol. The best place in the axis of drop a few drops of sewing machine oil, but it must be careful not to flow to the friction surface and the seam on the grid encoder. will all the dirt removed, the flexibility of the mouse ever resume.
three common faults: the mouse button failure
1. the mouse button without movement, this may be because the mouse button and the circuit board micro switch is too far away or click on the switch after a period of reduced ability to use the bounce. open the mouse, the mouse buttons below the moderate thickness of glue a piece of plastic film, the thickness is determined according to actual needs , can be used after treatment.
2. the mouse button is not the normal pop-up, this may be because when the key switch in the bottom of the bowl-shaped micro-fracture caused by exposure to film , especially the long-term use of plastic is easily broken reed. If a three-button mouse, you can a key that will remove the middle to emergency. If it is good quality original brand-name mouse, you can solder, the open micro switch, carefully clean the contacts, some of the grease, the bottles can be used.
Keyboard
keyboard in the course of the fault manifestations are varied, the reasons are multi-faceted. There is bad failure, mechanical failure has its own keys, as well as logic circuit fault, Xu Han, false welding, sealing off and the metal hole oxidation failure. repair the fault phenomena according to the analysis of different judgments, find out the cause of the malfunction, make the appropriate repairs.
a common fault: some of the keys on the keyboard, such as space key, the Enter key does not work, sometimes, adjustment shall be entered many times before - one or two characters, and some
keys such as cursor up key is pressed longer, continuously moving the cursor on the screen, this time the keyboard other characters can not enter, need to press again to bounce
.
this failure as a keyboard new keyboard, the keyboard is also sometimes the card key failure occurred. there keyboard card key phenomenon caused by the following two reasons: one reason is keycap insert the following position offset column, after pressing the button makes the keycap the body can not bounce a result of shell stuck the card key,
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Fault Two: Some characters can not enter.
if only one key character can not enter, it may be the key failure or joints Weld. inspection, in accordance with the the method described above, open the key
disk file with a multimeter resistance measurement of contacts and off state. If the key does not always turn on when pressed, then button reed fatigue or bad, in need of repair or replacement; if key press off when the contacts under normal, that may be due to cold solder joint, sealing off holes or gold scrap due to oxidation can be measured along the printing line, paragraph by paragraph, to find fault re-welding; Ruoyin metal hole oxidation and failure can be clean oxide layer, and then re-weld; if caused by the metal hole
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