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My computer restarts after I shut down. Do I have a virus?

I have a windows xp pro operating system and when I shut down it restarts automatically.
I have tried scanning with Spybot 1.6, Adaware 2008 free, Malaware bytes, and Trend micro.
All the scans come up clean. Is there a way to determine if I have some kind of virus?
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919191
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919191
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1 Solution
 
bbodine1Commented:
This sounds like you have either a bad memory stick or a bad slot on the motherboard of your computer. Did it just start doing it out of the blue or did you update something?
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919191Author Commented:
It just started happening recently after doing a fair bit of downloading from the internet

Regards
Kelly
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bbodine1Commented:
It's very unlikely that you have a virus unless you actually ran a .exe file that you weren't sure what it was and seeing as your antivirus didn't pick anything up.

If you can get the system to run long enough try the windows restore to a date past when you started having the issue.

If you can't get the system to run long enough then try using the "Start windows from the last known good configuration" feature from the startup dos screen (black and white text)

If neither work, pull the power on the box, open the case, pull out all of your memory sticks and hit the power button a few times before you plug the power back up to release any stored power in the motherboard. Then place one memory stick in the computer and try to start it up. Make sure you put the stick in dim 0 or dim 1. It should be written really small on the mother board somewhere close to the dim.

If the computer starts with no problems you know its a memory/dim error. If not you can move on to round 2 which may be a hard drive error.
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97WideGlideCommented:
Hi 919191,

I think that what you are experiencing is a feature added by Microsoft whereby the computer automatically restarts itself in an attempt to fix some problem XP has encountered.  By default, the computer is configured to automatically restart when Windows stops responding but you can check or change this setting by going to :

(right click )My Computer -> Properties -> Advanced -> Startup&Recovery
Look under System Failure, there are 3 check boxes there that might help you.  

-Write an event ..
- Send an alert ...
- Automatically Restart ...

So you can uncheck Automatically Restart to, well, not restart on error.
Then, I would check the log files to see if there is some clue there as to what is causing the restart.

Good Luck !
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97WideGlideCommented:
Here's an excellent page with more details regarding what I talked about above...
http://support.microsoft.com/kb/320299/
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919191Author Commented:
Thank you 97WideGlide.
I beleive you are correct.
Regards 919191
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