It could be caused by a lot of things, but it is usually a hardware problem, especially if it occurs randomly. A noisy power supply, loose screw under the motherboard, bad CPU fan, and memory, expansion boards, socketed chips, and cables that are not fully seated are among the common causes. The motherboard could be cracked—these are usually hard to find.
Hardware issues that cause computer shutdowns :
Heat - if your computer or any major component (memory, hard-drive, cpu, power supply) is overheating the system can shut down without notice.
Electrical problem - if any components on the computer have a short or voltage problem the system can shut down without notice.
Software issues that cause computer shutdowns :
Driver fault - if a major software driver (software that controls hardware) causes a fault the system can shut down to prevent damage to the hardware.
Answered by
Gyan Singh
, an ibibo Master,
at
6:40 PM on June 27, 2008