Five failures related to the motherboard

When the motherboard strikes, there may be a variety of symptoms. At this point, what should you do to eliminate the failure of the motherboard quickly and effectively? To this end, specially for you to provide some of the relevant fault quick response measures.

　　Why does the motherboard not start properly, or does the alarm sound appear?

Failure Analysis: The motherboard may not boot normally for a variety of reasons, for example, the capacitor on the motherboard, in the long working time, there may be burst or bubbling phenomenon, so that the filter function of the motherboard may be ineffective, so that the power supply current in a large component of the AC shock wave, resulting in the motherboard work instability, So as not to start normally; If the CPU power supply is not normal, the motherboard will not start normally, there is no alarm sound; In addition, the CPU fan fixed clip if a break, or memory slot break, or memory slot broken needle, CPU socket broken needle, etc., are likely to cause the above fault.

Failure response: In order to ensure that the motherboard capacitance on the voltage is not too high, should ensure that the power supply through the regulator filter, do not let the computer long-term work, resulting in capacitor overheating; you can use the multimeter to detect the transistor around the CPU, diodes, whether the work is normal, in order to check whether the If there is a broken needle or fracture phenomenon, you must replace the new accessories.

　　Why does the motherboard fail to start properly while memory emits a beep beep?

Failure Analysis: The possible causes of this phenomenon are: motherboard memory slot, poor performance, the golden finger on the memory bar and the socket reed contact is bad; it may be the gold finger on the memory strip, the surface of the gilded effect is not good, in the long work, gold-plated surface appears a very thick oxide layer, which leads to poor contact with the memory bar; Another possibility is that the production process of the memory bar is not standard, it is a bit thin, so that the memory and slot always have some gaps, a little bit of vibration, it may lead to poor memory contact, triggering alarm phenomenon.

Troubleshooting: To solve this phenomenon, as long as the computer chassis open, and in the case of power off the memory strip, will appear on the memory of the dust or oxide layer, wipe them with the eraser, and then reinsert into the memory slot can be. If the memory is too thin, you can use hot melt glue, the slots on both sides of the small gap to fill up to ensure that the memory is not swayed around, this can also effectively avoid the gold fingers are oxidized. If the above method, can not solve the problem, the replacement of new memory to try; In the case of new memory replacement, the alarm continues to appear, at this time can only replace the motherboard to try.

　　Why can't I correctly recognize the keyboard and mouse?

Failure Analysis: The possible causes of this phenomenon are: the motherboard does not support the mouse, keyboard, so that the system can not find the mouse, keyboard, even if you find the mouse, mouse operation does not listen to your control, or the keyboard, mouse and computer connection, the interface to connect the loose phenomenon, which will be very easy to cause, keyboard, Mouse and motherboard contact bad phenomenon, there is another reason is that the mouse, the keyboard itself is faulty, resulting in the system can not be effectively identified.

Troubleshooting: First Look at the instructions, look at what the motherboard supports the keyboard, the mouse, if the current use, and the motherboard is not compatible, you can replace the motherboard can be compatible with the keyboard, mouse, you can solve the problem; if the mouse, keyboard connection ports appear loose, you can replace the keyboard, mouse interface To ensure that the connection is stable, if the above method does not solve the problem, you must check the keyboard, the mouse itself problems, such as check their power supply voltage is +5v, if not normal, you should check the power supply insurance resistors there is no fuse phenomenon, if the number of insurance resistors is very large, You can use a finer wire to connect directly.

　　Why does the video card always emit abnormal alarm sound?

Failure Analysis: This phenomenon is likely to be a loose between the graphics card and the motherboard, or the video card itself has been damaged; another possible cause is that the motherboard and the video card are not compatible properly.

Troubleshooting: If there is a loose between the graphics card and the motherboard, you must not randomly shake the computer, the best to pull out the graphics card, plug in well. If the graphics card in other motherboards, using all normal, but on this computer, there is always no image, but the monitor power supply is normal, then this is likely to be the video card and motherboard incompatibility caused by, at this time must be replaced with the motherboard compatible with the video card. If the above method does not solve the problem, it is likely to be the problem of the video card itself, you can install it on other motherboards, if you are not able to work, you can conclude that the video card has been damaged, at this time only to replace the new video card.

　　Why is the printer not working properly?

Failure Analysis: In the troubleshooting of the printer itself and software failure, the printer does not work, most likely because of the live plug-and-pull print cable, resulting in the printing interface damage.

Troubleshooting: To resolve this failure, you must replace the new print interface chip, which can often be used on the same model of the old motherboard, can be easily found, you can ask professionals to help the printing chip welding, if your printer can support the USB interface, So you can connect the printer to the USB port, there is no need to replace the print interface, of course, you can also buy a multi-function card to "build" a new LPT port, but because "build" new LPT port, need to go through jumper settings and software settings, not much expertise of you, It's best not to act rashly.