my pc restarts by itself

September 25, 2011 at 11:57:50
Specs: Windows XP sp3, pentium (R)dual core cpu 2.52ghz 1 gb ram
hi everyone i have serious problem my pc restarts by itself and when i changed settings in system properties and unclick automatically restart ,it started turning off by itself ,i updated my nivedia drivers ,format my pc ,cleaned cpu fans and mother board ,scaneed whole system in safe mode with norton 2012 anti virus still i have same problem, but when my pc is in safe mode it doesnt restarts or shut down automatically pls help is it hardware problem or anything else

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September 25, 2011 at 12:08:49
Look in the BIOS (setup) screens for options on how the computer can be started. These can include keystroke/s, modem, network, etc. If you are having unexplained events I suggest you try physically disconnecting the computer from the internet by unplugging your network or modem connections, as the case may be. This will tell you if there are outside forces at work.

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September 25, 2011 at 13:01:35

First, disable the automatic restart. Then, I'd check the event logs to see if there's an entry that indicates why the machine was blue-screening/restarting.

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September 25, 2011 at 13:52:17
A computer restarting/shutting down by itself is usually caused by these few things.

1.) A hardware problem or defect, if the computer shuts off by itself it could be the CPU (Central Processing Unit) overheating, or the PSU (Power supply unit) failing.
2.) A driver problem or newly installed software.

Do you get a Bluesceen Of Death (BSOD?) if so what is the Error code associated with this bluescreen?

Usually a blue screen of death will have a stop code which you can search up on the internet and it may also tell you the name of the driver/file that is causing the problem.

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