1, memory and other hardware is not plugged in well
If you've never moved the hardware, also cannot rule out this reason, because the long time uses the video card, the memory gold finger even if you do not move it also can oxidize, therefore you may find an eraser to wipe a memory and the card gold finger to rub cleanly again to insert, certainly similar independent sound card, the Independent network card, Video capture card and so on, although the probability of a reboot is small, you can also do it again, note: CPU if not necessary to remove arbitrarily
2, due to excessive dust in the chassis, resulting in hardware overheating
You should have a good view of the look and sound, but the chances are slim.
① now the motherboard on the temperature alarm and restart settings by default is off, you do not set up if the temperature reason for the restart also means that your CPU has been burned.
②intel CPU very early has the temperature is too high automatic frequency reduction function, if you do not feel the CPU slow before reboot, then you can eliminate this reason.
③ general situation only CPU overheating or motherboard north-south bridge overheating will restart, if the video card if overheating will be the first screen and then restart, network card overheating, the speed will slow, the sound card overheating will be intermittent.
3, the jumper is a problem, switch jumper connected to power .
4, the power supply power is insufficient or power supply aging power down, resulting in restart.
this reason basically can account for the restart Reason 50%, the new machine generally best rated power in more than 250W better. In addition to the use of power after a long time, because the dust and heat dissipation will cause the output power drop, the power to remove dust can have a certain effect. Detection method find a friend to borrow a new power source with a high rated power. Try it.
5, the motherboard dust too much, individual components, north-South bridge temperature is too high
This is all by experience, I used to have a board, like to restart, changed countless things and power did not find the reason. In use last year, the Power conversion module on the motherboard burned one to find the cause.
6, Motherboard power Conversion components Aging
This problem has some very significant features, shutdown for a period of time, more than 12 hours, the first boot often do not light, or hardware testing repeated restart, generally shut down again, and then boot all normal.
The above is 6 kinds of causes that cause the computer to restart automatically, hope everybody can like