-=PCTechTalk=- Re: computer restarts it self

This must be a pretty common complaint
there's alot about on the net, people asking this same question
the main reply from various techs seems to be that the CPU fan needs to be 
replaced, or the power supply
if your computer is five years old and you have never had to replace either 
one of these, it might be a good place to start
I copied a few of the replies I found on the net on this question
and HERE they are :0)
hope you get this problem solved

Barb
When a computer starts rebooting itself it is almost always caused by a 
hardware problem. Turn it off now! Inspect for cables that have fallen in 
the CPU fan, loose cables, and screws, etc. under the motherboard. Reseat 
the memory and expansion boards if the problem persists. Pull all expansion 
boards except video. Uninstall the tape drive.

Make sure the CPU fan is working properly.

=====================

Right click on My Computer and select properties.
Click Advanced tab.
Click Settings under Startup and Recovery.
Under System Failure uncheck Automatically Restart.
Click OK.

This won't cure your problem, as instead of restarting you'll likely get a 
Blue Screen of Death (BSOD) instead, but the information displayed will 
allow you to trace your problem, or post it here!

If you still get the system rebooting and there is no BSOD then it's likely 
that your processor is overheating or your PSU is faulty. Try checking the 
system health in the BIOS for the processor or system temperature. You'd 
like it to be less than 50d Celcius, anything over 75d is running dangerous. 
Last Christmas mine hit 114d C and then caught on fire, although it was 
overclocked by a good 500mhz
=======================

I would start by replacing the Power Supply. Power supply swaps are pretty 
easy.
====================

 i think is it is a heat problem you might want to look into that, check in 
the bios setting for you temperature right after the computer shuts down. 
You might need a better heatsink or more fans in your case
========================

Even a few seconds without the CPU being used and CPU fan still spinning at 
a fair speed will cool it a lot, allowing a reboot almost instantly
==================

you might have sassar.... well anyway.. this is what you can do... once you 
get on your computer.. you have about a 5 min window to put up your 
firewall... do that.... on the next restart... go and fix that sasser 
worm... and you should be fine
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