The computer suddenly loses power

Computer in the normal use of the process, sometimes there will be a sudden loss of power, that is, the host on the lights are not lit, the monitor's power LED is not bright, after the reboot can resume work.

Computer motherboard and other cards on the chip components are not likely to damage, the problem may be caused by virtual welding, touch line, bad contact, there are foreign bodies and other causes.

Tap the different parts of the computer chassis with your hands and find that when you slap your hand on the chassis, there are occasional failures. When the fault occurs, the power supply fan stops working, obviously the fault is now the host power overload protection.

Remove the network card, sound card, the screws of each board, the computer can start the work normally, but with the hands of the motherboard, the fault occurred again. The motherboard will be removed, observation by the vicinity of the printed circuit board, found on the board two parallel wiring of the printed circuit gap narrow, one of which also received a hard object collision, produced a fine small thorn. After the burr is removed, insert the card, tighten the screws, close the chassis after the boot, the computer work properly.