【 Weak current College 】 common motherboard failure of detailed

1. power on the

Due to the motherboard, this type of failure usually is because the motherboard is damaged or destroyed by the CIH virus resulted in the BIOS. General BIOS be viruses in the data after the hard disk will be lost, is we can detect hard disk data is intact to determine if BIOS is corrupted, there are two reasons why the phenomenon:

1, because the motherboard expansion slot or the expansion-card problems, causes, such as audio plug in expansion cards motherboard not responding without displays.
2. for the purposes of the motherboard jumper-free access, if the CMOS settings of the wrong CPU frequency, but also may cause malfunction, do not appear on this, as long as the clear CMOS can be addressed. Clear CMOS jumper General lithium battery on the motherboard, its default location in the vicinity of 1, 2, short circuit, just change it to jump to 2, 3 short circuit for a few seconds to solve the problem, for previous old motherboard if users can't find the jumper, so long as the battery down until the post is displayed to enter the CMOS Setup and then shutdown, will also appear on the battery reaches the CMOS discharge.
For the motherboard BIOS corrupted fails, we can plug in ISA card if there is no display, if there is no splash screen, you can own a piece of automatically updating the BIOS of the floppy disk, Flash the BIOS, but some of the motherboard BIOS is corrupted, the floppy drive doesn't work (as far as I know, the inheritance of the motherboard was), at this point, you can try to use hotplug method, but it has been my personal experience, using hot-plug in addition to the same BIOS, may cause some damage to the motherboard, so reliable component is used to write code that writes to the BIOS update file BIOS inside (repairing mobile place normally have to write code).

　　　
　
　
Failure to board a damaged, possibly because the motherboard with a long battery leakage resulting in circuit board mouldy (for previous old motherboard), making the Board does not work, for which we can thoroughly cleaning if we can solve the problem, this method is also on board the slot of a dead root bad contact.
Cleaning methods: tool to remove the motherboard's BIOS, CMOS battery, and then with a hard brush, washing powder, on its part to carry out a thorough cleaning, rinse with clean running water at last, at least until the motherboard and try again (the author used the rule of law is better than a few boards, and didn't find any sequelae).

Second, the Board COM port or parallel port, IDE port damage

Against such failures are typically user-created plug-related hardware, users can use multi-function card instead, but instead must be preceded by a prohibition of the motherboard with the COM port and parallel port (a motherboard with IDE ports are prohibited to work properly).

Third, the CMOS settings not saved

Such failures are typically lack the motherboard battery voltage, can be replaced, but some of the motherboard battery replacement also does not resolve the problem, you have two possibilities:
1. Board circuit issues, for which you want to find professional maintenance;
2, motherboard CMOS jumper problem, some caused by human failure and motherboard CMOS jumpers to clear the option, making CMOS data cannot be saved.

4. download the windows into motherboard driver after the panic or optical drive read up slower phenomenon

In some non-branded motherboard I have experienced this kind of phenomenon, will the motherboard drivers after installation, restart the computer in normal mode into win98 desktops, and the driver under Windows98 cannot be uninstalled, so users have to reinstall the system.
In some of the magazine to see Mount motherboard driver can increase host speed, improve system stability of some article, but my five years of computer maintenance experience is not felt the matter, in my personal experience is concerned, unless a device conflict exists under win98, there is no need to install drivers for the motherboard.

5. installation of windows or start Windows when the mouse is not available

Against such failures of software causes generally include the following:
1. the CMOS Setup error. In the CMOS settings for power management bar a modemuseIRQ project, his option for 3, 4, 5 ..., NA, generally it's the default option for 3, set it to 3 break keys to outside. This type of failure usually common in old 586 computer, the new motherboard normally does not get this kind of phenomenon.
2. in some old-fashioned 586 computer its COM port and LPT port on a signal connector attached to the outside of the chassis, its COM port signal connector with the motherboard, the Add method also differ, if not received law can also cause the mouse is not available, it's received law generally have the following two ways: 1, signal lines in a 1 to 9 of the order in which they are connected with the connection header. 2, the signal line and cross linked to a connection point, the connection header above a row respectively connecting signal line 1, 3, 5, 7, 9, the following row is 2, 4, 6, 8.

6. computer freezes frequently, even in the CMOS settings will panic phenomenon

In CMOS in panic phenomenon, generally there is a problem with the motherboard or CPU, if pressed method does not resolve the failures, that will only replace the motherboard or CPU.
Against such failures are typically there is a problem with the CACHE system board or motherboard design thermal badness, author of the elegant 815EP motherboard has found is not good enough because the motherboard heatsink and the phenomena that caused the fault. In a panic after touch-CPU motherboard components around and found that its temperature is very high and hot. After replacing the high-power fan, panic failure is resolved. For CACHE there is a problem, we can enter the CMOS Setup and disable the CACHE can successfully resolve the problem, of course, the CACHE disable speed that is sure to have an impact.