Maintenance of host fault caused by voltage instability

Fault phenomenon: The author of the computer Configuration for the Celeronⅱ533,ms 6309 motherboard, Seagate 20GB hard Drive, built-in modem, etc. into the summer, the computer for several consecutive nights suddenly automatic power, the specific performance of the power indicator light, the fan in the chassis buzzing straight, the monitor is not shown.

Repair and Resolution: Previously, the computer shutdown after the power plug is not pulled straight, I've never seen anything like it. I first installed the secondary system, can be a few days after the failure is still, the elimination of software failures may be the author's motherboard has "d-led" function, the system from the power to the boot system in the process of testing each step to open the chassis, Found in the host automatic Power, "d-led" of the four detection lights for all red, indicating that the host is only the electricity, did not do any other work, so the host automatically after the monitor has no display then carefully read the instructions, found that the motherboard CMOS settings in the power management set Management Setup) The default value of resume on Ring/lan is "Enabled." Think of the inside cat inside the chassis-is not the summer night voltage instability, so that the cat received the wrong signal and caused the host to automatically power it? Restart now to the CMOS settings view, Sure enough, the resume on Ring/lan item is set to "Enabled" and then changed to "Disabled" after the restart, the failure to eliminate.

Revelation: The author of the Power plug for a long time, coupled with a large summer voltage fluctuations, which led to the occurrence of such a fault from this, the author after using the computer will Power plug unplug, also be cut, long wisdom!