Random Reboots

What would cause a computer to randomly reboot itself?

Thanks!

Robert
Robert EhingerIT specialistAsked:
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Alan Huseyin KayahanConnect With a Mentor Commented:
     Hi Robert
         Lots of things may cause. What you have to do is collect as many feedbacks as possible to track the issue.  Check the eventlogs, the Blue Screen messages if exist, turn of auto reboot to see BSODs. Think about reverting your latest actions.

Regards
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MarkConnect With a Mentor Commented:
Check the capacitors onboard the motherboard for leakage and bulging.
Pics are on the right side of this page, click on them to enlarge.
http://www.badcaps.net/pages.php?vid=5
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BolingConnect With a Mentor Commented:
Heat and power supply issues are often the cause.
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PUNKYConnect With a Mentor Commented:
Like said above, there are many possible causes:
- Memory error
- Bad sector in hard drive
- Spy or Virus
- Overheat
- System board failed (like bad caps), etc.

You should have or see some kind of error message so that we could help you more to id the rootcause.
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Peter HartConnect With a Mentor Commented:
goto control panel - open administrative tools
double click on "Event viewer"  - check the logs to see if it detected any problems or why it rebooted.
(click on each type - application,security....) and read on the right
it could be a device driver update from microsnot.  usually the ATi graphice card
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MereteConnect With a Mentor Commented:
lets find out, r/click the my computer properties advanced
start up and recovery settings
UNTICK auomatically restart
next time your system reboots you shoudl get a blue screen eror
please try and note  down  the error number
http://en.wikipedia.org/wiki/Blue_Screen_of_Death

Could be driver problem or a failing hardware somewhere
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Dr-4NConnect With a Mentor Commented:
A virus infection can do this also, check your system for viruses
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Robert EhingerIT specialistAuthor Commented:
I'm going to start by checking for viruses. If that doesn't do the trick I will proceed to some of the other software related suggestions before messing with the hardware.
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MarkCommented:
The badcaps check only requires taking the cover of and looking. It would be worth the short time it takes to do this first, and you don't have to mess with hardware other than the screws holding the cover on.
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Computer101Commented:
Forced accept.

Computer101
EE Admin
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