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In this article, the editor introduces in detail "how to deal with common problems and faults on the computer motherboard". The content is detailed, the steps are clear, and the details are handled properly. I hope that this article "how to deal with common problems and faults on the computer motherboard" can help you solve your doubts. Let's follow the editor's ideas to learn new knowledge.

Common failure 1: no display when booting

There is no display on the computer, the first thing we need to check is BIOS. Important hardware data are stored in the BIOS of the motherboard, and BIOS is also a fragile part of the motherboard, which is extremely easy to be destroyed. once damaged, the system will not be able to run. This kind of failure is generally caused by the destruction of the motherboard BIOS by the CIH virus (of course, we do not rule out the failure of the motherboard itself and the system can not run). Generally speaking, after the BIOS is destroyed by the virus, all the data in the hard disk will be lost, so we can determine whether the BIOS is damaged by checking whether the hard disk data is intact. If the hard disk data is intact, there are three other reasons why the boot will not display:

1. Because there is a problem with the expansion slot or expansion card of the motherboard, the motherboard does not respond and does not display after the expansion card such as sound card is inserted.

2. The CPU frequency set by the jumper-free motherboard in CMOS is incorrect, which may also cause failure of display. As long as the CMOS is cleared, it can be solved. The jumper to clear CMOS is generally near the lithium battery on the motherboard, and its default position is generally 1 or 2 short circuit, as long as it is changed to 2 or 3 short circuit for a few seconds, the problem can be solved. For the old motherboard, if the user can not find the jumper, as long as the battery is removed, wait for the boot display to enter the CMOS setting and then shut down, and the battery will be on to achieve the purpose of CMOS discharge.

3. The failure of the motherboard to recognize memory, memory damage or memory mismatch will also lead to the failure of boot without display. Some old motherboards are fussy about memory, once plugged in memory that the motherboard cannot recognize, the motherboard will not be able to start, and even some motherboards will not give you any fault hints (tweets). Of course, sometimes in order to expand memory to improve system performance, inserting different brands and types of memory will also lead to this kind of failure, so we should pay more attention to it during maintenance.

For the failure of BIOS damage on the motherboard, we can plug in the ISA graphics card to see if it is displayed (if prompted, you can follow the prompted steps. If there is no boot screen, you can do an automatic update BIOS floppy disk, refresh BIOS, but some motherboard BIOS is destroyed, the floppy drive does not work at all, at this time, you can try to use hot plug method to solve (I have tried, as long as the BIOS is the same, in the same level of motherboard can be successfully recorded.

However, the use of hot plug in addition to the need for the same BIOS may also lead to damage to some components of the motherboard, so the reliable way is to write the BIOS update file into the BIOS (it is safer to find a computer provider with this service).

Common failure 2: CMOS settings cannot be saved

This kind of failure is generally caused by insufficient battery voltage on the motherboard, which can be replaced, but some motherboard batteries cannot solve the problem after replacement, so there are two possibilities:

1. The problem of motherboard circuit should be repaired by professionals.

2, motherboard CMOS jumper problem, sometimes because the motherboard CMOS jumper is set to clear option, or set to external battery, so that the CMOS data can not be saved.

Common trouble 3: after installing the motherboard driver under Windows, there is a panic or the reading speed of the optical drive slows down.

This phenomenon sometimes occurs on some miscellaneous motherboards. After the motherboard driver has been installed, the restart computer cannot 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 to reinstall, the problem can generally be solved, if not, you can only reinstall the system.

Common failure 4: mouse is not available when installing Windows or starting Windows

The software cause of this kind of failure is usually caused by incorrect CMOS settings. There is a modem use IRQ project in the power management bar set by CMOS, whose options are 3, 4, 5. And NA respectively. Generally, its default option is 3, and you can set it to an interrupt item other than 3.

Common failure 5: the computer crashes frequently, and it will also crash when setting up CMOS.

When a crash occurs in CMOS, there is generally a problem with the motherboard or CPU. If the press method cannot solve the problem, then only replace the motherboard or CPU.

This kind of fault is generally caused by the problem of the motherboard Cache or the poor heat dissipation of the motherboard design. The author has found the phenomenon that the motherboard heat dissipation is not good enough on the 815EP motherboard. Touch the motherboard components around the CPU after the crash and find that its temperature is very hot. After replacing the high-power fan, the crash fault can be solved. If there is a problem with Cache, we can enter the CMOS setting and disable Cache to solve the problem smoothly. Of course, the speed will certainly be affected after Cache is prohibited.

Common failure 6: motherboard COM port or parallel port, IDE port failure

This kind of failure is generally caused by the user's live power plug and unplug related hardware, at this time, the user can use a multi-function card instead, but before replacing it, the COM port and parallel port on the motherboard must be prohibited (some motherboards even IDE ports must be prohibited before normal use).

After reading this, the article "how to deal with common problems and faults on the computer motherboard" has been introduced. If you want to master the knowledge points of this article, you still need to practice and use it yourself. If you want to know more about related articles, welcome to follow the industry information channel.

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