What are the common motherboard failures?

First, the motherboard

The motherboard is a key part of the entire computer and plays a vital role in the computer. Failure of the motherboard will affect the operation of the entire PC system. Next, let's take a look at the main board in the use process of the most common fault.

Common failure One: boot no display

Computer boot no display, the first thing we have to check is the BIOS. The motherboard's BIOS stores important hardware data, while the BIOS is also a relatively vulnerable part of the motherboard, very vulnerable to damage, once the damage will cause the system to be unable to run, such a failure is generally due to the motherboard BIOS is CIH virus damage (of course, do not rule out the motherboard itself caused by the failure of the system to run. )。 The general BIOS is destroyed by the virus after the data in the hard disk will be lost, so we can detect whether the hard disk data is intact to determine if the BIOS is destroyed, if the hard disk data intact, then there are three reasons can cause the phenomenon of no display:

1. There is a problem with the motherboard expansion slot or expansion card, resulting in plug-in such as a sound card and other expansion cards after the motherboard does not respond and does not display.

2. The jumper-free motherboard in the CMOS set the CPU frequency is not correct, may also raise does not display the fault, in this, as long as clears the CMOS can solve. To clear the CMOS jumper is generally near the motherboard lithium battery, its default location is generally 1, 2 short-circuit, as long as the jump to 2, 3 short-circuit a few seconds to solve the problem, for the previous old motherboard if the user can not find the jumper, as long as the battery removed, to boot display into the CMOS settings and then shut down, The battery is also up to the purpose of CMOS discharge.

3. The motherboard does not recognize memory, memory corruption, or memory mismatch will cause the power-on without display failure. Some older motherboards are more critical memory, once plugged in the motherboard unrecognized memory, the motherboard will not boot, and even some motherboards do not give you any fault hint (tweet). Of course, sometimes in order to expand the memory to improve the performance of the system, the result of plugging in different brands, types of memory will also lead to such failures, so in the overhaul, should pay more attention.

For the failure of the motherboard BIOS to be damaged, we can plug in the ISA graphics to see if there is no display (if prompted, you can follow the instructions. ), if there is no boot screen, you can do a self-updating BIOS floppy disk, re-refresh the BIOS, but some motherboard bios is destroyed, the floppy drive does not work at this time, you can try to use hot-plug method to solve (I have tried, as long as the same bios, in the same level of the motherboard can be burned successfully. )。 However, the use of hot plug extraction requires the same BIOS and may cause partial damage to the motherboard components, so a reliable method is to use a writer to write the BIOS update file into the BIOS (can find the service of the computer to resolve the relatively safe).

Common Fault II: CMOS settings cannot be saved

This type of failure is generally due to the motherboard battery voltage is insufficient, this can be replaced, but some motherboard battery replacement also does not solve the problem, there are two possible:

1. Motherboard circuit problems, for this need to find professional maintenance;

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

Common failure Three: After installing the motherboard driver under Windows, the crash or the optical drive read disk slows down the phenomenon

This behavior can sometimes occur on some of the boards, and after the motherboard driver is loaded, restarting the computer does not enter the Windows 98 desktop in normal mode, and the driver cannot be uninstalled under Windows 98. If this is the case, it is recommended to find the latest driver reinstall, the problem is generally resolved, if not, you can only reinstall the system.

Common failure Four: Mouse is not available when you install Windows or start Windows

The software cause of such a failure is generally caused by a CMOS setup error. In the power management bar of the CMOS setup there is a modem use IRQ item with options of 3, 4, 5 ..., NA, generally it has a default option of 3, and it is set to a break item other than 3.

Common failure Five: the computer crashes frequently, in the CMOS settings will also appear in the freezing phenomenon

In the CMOS in the freezing phenomenon, generally for the motherboard or CPU problems, if the press can not solve the failure, then only replace the motherboard or CPU.

This type of failure is generally due to motherboard cache problems or motherboard design heat dissipation caused by the author on the 815EP motherboard has been found due to the motherboard cooling is not good enough to cause the phenomenon of the failure. After the crash, touch the motherboard components around the CPU and find its temperature very hot. After replacing the high-power fan, the freezing failure is resolved. In the case of a problem with the cache, we can enter the CMOS settings, the cache will be disabled to solve the problem, of course, the cache after the speed will certainly be affected.

Common Failure VI: motherboard COM port or parallel port, IDE port failure

This type of failure is generally due to the user charged Plug and unplug related hardware, at this time the user can use a multifunction card instead, but before the replacement must first prohibit the motherboard with the COM port and parallel port (some motherboards even the IDE port to prohibit the normal use).