Free Computer Repair Service

Whether power supply have voltage output:
A power supply fan
B CPU Fan
C. host panel power indicator.
(1) System crashes.
a. The DC output voltage is unstable because of power supply failure (poor quality or too much heat)
b. Input AC voltage is too high, too low or the impact of sudden movements.
(2) Computer suddenly auto restart when at work, usually caused by power failure.
a. Short-term power-down or voltage fluctuations caused by the exchange of low-voltage power supply protection circuit.
b. Because of poor power supply load when the external device (such as floppy disk, etc.) starts to read and write data, power supply output voltage suddenly drops, the host is restarted.
c. line access to the internal power supply is not good and vibration, the output DC transient has no dizzy and restart.
(3) The power supply fan does not rotate or noise is too large. Fan coil blew, screw loose.