Motherboard
First, motherboard
The motherboard is a key component of the entire computer and is a crucial role in computers. If the motherboard will fail, it will affect the work of the entire PC system. Below, let's take a look at what is the most common fault in the process of use.
Common faults 1: boot no display
The computer is bootless, first we have to check it is BIOS. The BIOS of the motherboard stores important hardware data, and the BIOS is also a fragile part of the motherboard. It is easy to damage. Once the damage will cause the system to fail, this fault is generally because the motherboard BIOS is damaged by CIH virus (Of course, it does not rule out that the main board itself will not run.). Generally BIOS is lost after the virus is damaged, so we can determine whether the BIOS is destroyed by detecting the hard disk data. If the hard disk data is intact, then there are three reasons that will cause the bootless display:
1. Because the motherboard expansion slot or expansion card has problems, there is no response to the motherboard after the extension card such as a sound card is plugged.
2. The CPU frequency set in the CMOS is not correct in the CMOS, or it may trigger the failure, which is solved as long as CMOS is cleared. Clearing the CMOS jumper is generally near the main board's lithium battery, its default location is generally 1, 2 short circuit, as long as it is changed to 2, 3 short circuits can solve the problem, for the previous old motherboard if the user is not available To this jumper, as long as the battery is removed, when the battery is turned off and then shuts down, then shuts down, and the battery is also reached on the power of the CMOS discharge.
3. The motherboard cannot identify memory, memory damage, or memory mismatch can also cause a fault without display. Some old motherboards are more picky memory, once inserted with the memory that cannot be identified, the motherboard cannot start, even some motherboards do not give you any fault tips (tweet). Of course, sometimes in order to expand memory to improve system performance, the results are plugged in with different brands, and the type of memory also causes the appearance of such faults, so it should be more attention when overhaul. For the failure of the motherboard BIOS, we can plug in ISA graphics card to see if there is no display (if prompted, you can follow the prompt steps.), If there is no boot screen, you can do a floppy disk that automatically updates the BIOS. Refreshing the BIOS, but some motherboard BIOS is destroyed, the flopp drive does not work at all, at this time, try to solve the hot-swap method (I have tried, as long as the BIOS is the same, you can succeed in the same level) Burn.). However, it is possible to cause the same BIOS in the same BIOS using hot-swappable to cause damage to the main board, so reliable method is to write the BIOS update file into the BIOS (which can be found to be safer).
Common faults 2: CMOS settings cannot be saved
Such faults are generally due to the lack of battery voltage, but it can be replaced, but some of the motherboard battery is also solved after the problem, there are two possibilities:
1. The motherboard circuit problem is to find professional repairs;
2. Motherboard CMOS jumper problem, sometimes because the error is incorrectly set to the CMOS jumper on the motherboard, or set to an external battery so that the CMOS data cannot be saved.
Frequently faults 3: Phenomenon that slows down when installing motherboard drivers under Windows
Such a phenomenon sometimes occurs on some hidden boards, and then the motherboard driver is installed, restart your computer from entering 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 is generally able to solve, if it is not, it can only reinstall the system. Common faults 4: Installing Windows or starting Windows Mouse is not available
Software reasons for such faults is generally caused by CMOS settings errors. In the power management bar set in CMOS, there is a Modem USE IRQ project. His options are 3, 4, 5 ..., NA, generally its default options 3, set it to 3 interrupt items I.e.
Common faults 5: The computer is frequently dead, and the crash will also occur when CMOS settings are set.
Crafts in CMOS, generally have problems with the motherboard or CPU. If the method cannot be solved if the method cannot be resolved, then the motherboard or CPU is replaced.
This fault is generally because the motherboard Cache has a problem or the main board design is poor, and the author has found the phenomenon of the failure due to the heat dissipation of the motherboard. After the crash, touch the main board components around the CPU and find that its temperature is very hot. After replacing the high power fan, the crash is resolved. For Cache's problematic fault, we can enter the CMOS settings, and to solve the problem after disabling Cache, of course, Cache is prohibited from being affirmed.
Common fault six: motherboard COM port or parallel port, IDE port
This fault is generally due to the user's charging plug-of-related hardware. At this time, the user can use multi-function card to replace, but instead of it must first prohibit the com ports and parallel ports that come on the motherboard (some motherboards even IDE ports) It is forbidden to use it normally).
