When the computer boots, the fan turns and stops.

Hold down the chassis power button, observe the CPU cooling fan turned a few laps, it stopped, and then turn a few laps and stop wish repeatedly so, is not open machine. The same is true with the lights on the chassis. Light it up and extinguish it. Sometimes do not know where to press the right, you can boot. What's the reason?

There are many reasons for this problem. May be the switch button short circuit, at this time you can try to remove the "power" column, the use of a screwdriver to take the short. It is possible that the host has not been used for a long time, graphics or memory due to oxidation and poor contact. It is also possible that the motherboard has a problem, such as the motherboard on the main crystal vibration broken off. It is recommended that the user clean up the video card and memory to see if it is better or send it to repair.