to be sick, not to mention the machine. The motherboard is a key component of the entire computer and plays a vital role in the computer. If the motherboard fails, it will affect the work of the entire PC system. Below, let's take a look at what are the most common faults in the motherboard during use.
a common fault: boot no display
computer boot no display, we need to check the BIOS of the motherboard's BIOS is stored in an important hardware data, but also the motherboard BIOS in comparison. The vulnerable part is extremely vulnerable. Once it is damaged, the system will not run. This type of failure is usually caused by the destruction of the motherboard BIOS by the CIH virus (of course, the system itself cannot be operated due to the failure of the motherboard itself). Generally, the data in the hard disk will be lost after the BIOS is destroyed by the virus. Therefore, we can judge whether the BiOS is damaged by detecting whether the data of the hard disk is intact. If the data of the hard disk is intact, there are three reasons why the booting does not display: BR>
1. Because there is a problem with the motherboard expansion slot or expansion card, the motherboard does not respond without an extension after plugging in an expansion card such as a sound card.
2. CPU frequency jumper-free motherboard in the CMOS settings wrong, it may lead to not show fault, which, as long as the clear CMOS to be addressed. Clear the CMOS jumper is generally near the lithium battery of the motherboard, its default position is generally 1, 2 short circuit, as long as it is changed to 2, 3 short circuit for a few seconds to solve the problem, for the old motherboard if the user can not find To the jumper, just remove the battery, wait until the boot display enters the CMOS settings, then turn it off, and the battery will also go up to the CMOS discharge.
3. motherboard does not recognize memory, memory corruption or memory does not match the boot no display failure cause. Some old motherboards are more picky memory. Once plugged in memory that the motherboard does not recognize, the motherboard will not boot, and even some motherboards will not give you any fault prompts (tweets). Of course, sometimes in order to expand the memory to improve system performance, the result is that plugging in different brands and types of memory will also lead to such failures, so you should pay more attention when overhauling.
for a failed motherboard BIOS is damaged, we can plug in ISA card to see whether the display (if prompted, can prompt steps below.), If not the boot screen, you can make one yourself Automatically update the BIOS floppy disk, re-flash the BIOS, but some motherboard BIOS is destroyed, the floppy drive does not work at all, at this time, you can try to solve it with hot plug method (I have tried, as long as the BIOS is the same, at the same level The motherboard can be successfully burned.). However, the use of hot plugging in addition to the need for the same BIOS may also cause damage to some components of the motherboard, so a reliable method is to use the code writer to write the BIOS update file to BiOS (it can be safer to find a computer vendor with this service).
Troubleshooting II: CMOS settings can not be saved
Such failures are generally caused due to insufficient motherboard battery voltage, which can be replaced, but some board battery replacement the same problem Bunengjiejue in this case there are two possibilities:
1. motherboard circuit problems, which are looking for professional service;
2. motherboard CMOS jumper problem, because sometimes the mistakes on the motherboard The CMOS jumper is set to clear option or set to an external battery so that CMOS data cannot be saved.
Troubleshooting III: CD-ROM drive crash or slow down the phenomenon
sometimes such a phenomenon on some no-name motherboard under Windows after installing the motherboard drivers, motherboard drivers After the program is installed, restarting the computer does not enter the Windows 98 desktop in normal mode, and the driver cannot be uninstalled under Windows 98. If this happens, it is recommended to find the latest driver reinstallation, the problem can generally be solved, if it is not, you can only reinstall the system.
Troubleshooting four: Install Windows software reasons or start Windows when the mouse is not such a failure occurs with
is generally due to the CMOS setting error. There is a modemuseIRQ item in the power management bar of the CMOS settings. Its options are 3, 4, 5, ..., NA. Generally, its default option is 3, and it can be set to an interrupt other than 3.
five common faults: frequent computer crashes, the CMOS settings will also appear during the phenomenon of death Dead phenomenon
occur in CMOS, usually the motherboard has a problem or CPU, should the press law can not To solve the problem, then only replace the motherboard or CPU.
the recurrence of such failures are generally due to the motherboard Cache problem caused by the heat or bad motherboard design, I had found the phenomenon is not good enough because motherboard cooling caused by the failure on the 815EP motherboard. After the crash, touch the motherboard components around the CPU and find that the temperature is very hot. After replacing the high power fan, the crash is resolved. For problems with Cache problems, we can enter the CMOS settings, the Cache can be banned to solve the problem smoothly, of course, the speed will be affected after the Cache is banned.
Troubleshooting Six: Board COM port or parallel port, the IDE port failure
Such faults are generally due to causes related hardware hot plug the user, then the user can use the multi-function card instead of However, before replacing it, you must first disable the COM port and the parallel port on the motherboard (some motherboards must be blocked from the IDE port for normal use). Memory
computer memory is one of the most important parts, its role is no doubt, the most common fault memory are what it?
a common fault: boot no display
memory cause for this failure is usually because the memory and the motherboard memory slots Jiechubuliang cause, as long as the back and forth with the eraser wipe it Goldfinger The part can solve the problem (do not use alcohol or other cleaning), and there is memory damage or a problem with the motherboard memory slot.
article caused due to memory reasons boot no display failure, host speakers typically long beep (for AwardBiOS terms).
Troubleshooting II: Windows Registry damage often for no reason, prompted the user to restore
Such failures are usually caused by poor quality because the memory, it is difficult to repair, replace only one way .
Troubleshooting III: Windows often automatically enter safe mode
Such failures are generally due to the motherboard and memory is not compatible or memory caused by poor quality, common in the high frequency of memory for On some motherboards that do not support this frequency memory stick, you can try to reduce the memory read speed in the CMOS settings to see if it can solve the problem. If not, then only replace the memory stick.
Fault IV: random crashes
such failures are generally due to the use of several different memory chips, because of the different pieces of generating a time difference between memory speed and thus lead to crashes, this It can be solved by reducing the memory speed in the CMOS settings. Otherwise, only the same type of memory can be used. Another possibility is that the memory module is not compatible with the motherboard. Such a phenomenon is generally rare. In addition, it may be caused by a bad connection between the memory module and the motherboard.
five common faults: memory after increasing system resources, but reduced
such a phenomenon is generally due to the motherboard and memory caused by incompatible, common in the high-frequency memory memory for some not On a motherboard that supports this frequency of memory, when such a failure occurs, you can try to set the memory speed lower in COMS.
Troubleshooting Six: often run out of memory when running certain software prompts
This phenomenon is generally due to a lack of system disk free space cause, you can delete some useless files, leaving some space to It is generally suitable to stay at around 300M.
seven common faults: When you install Windows to boot from the hard disk space is detected, the system prompts insufficient memory
such failures are generally due to user added emm386.exe in the config.sys file Files, just mask them off to solve the problem.
graphics
a common fault: boot no display
such failures are generally due to the graphics card and the motherboard socket motherboard Jiechubuliang or there is a problem caused. For motherboards with integrated graphics, if the memory share the main memory, you need to pay attention to the location of the memory module. Generally, a memory module should be inserted in the first memory module slot. There is no display failure due to the reason of the graphics card. Generally, a long and two short beeps will be issued after booting (for AWARDBiOS graphics cards).
Troubleshooting II: Show Huaping, blind to the handwriting
such failures are generally due to the monitor or video card does not support high-resolution caused. When the screen is displayed, you can switch the startup mode to the safe mode, and then enter the display settings under Windows 98. In the 16-color state, click the “Apply” and “OK” buttons. Restart, delete the graphics card driver in the normal mode of Windows98 system, restart the computer. You can also enter the safe mode. In a pure DOS environment, edit the SYSTEM.INI file, change display.drv=pnpdrver to display.drv=vga.drv, save the disk, and update the driver in Windows.
Troubleshooting III: Color display is not normal, such failures are generally the following reasons: 1.
graphics card and monitor signal line Jiechubuliang own fault monitor 2.
3. in some software running inside color is not normal, usually common in older machines, there is a check in the color options in the BiOS, open it to
4. graphics damage;
5. display is magnetized, such a phenomenon is generally due to the magnetic energy of an object due to too close, after magnetization phenomenon may also cause the display deflection occurs.
Troubleshooting four:
crashes such failures are generally more common in the motherboard and graphics card is not compatible or motherboard and graphics card Jiechubuliang appear; graphics card is not compatible with other expansion cards can also cause crashes.
five common faults: Screen abnormal noise or dot pattern
such failures are generally due to problems with memory or graphics card and motherboard Jiechubuliang cause. You need to clean the gold finger of the graphics card or replace the graphics card.
Troubleshooting Six: video driver is missing
graphics drivers loaded, the driver automatically lost after running for some time, such failures are generally due to poor quality or graphics card and motherboard does not Compatible, the graphics card temperature is too high, resulting in unstable system operation or crash, only the replacement of the graphics card.