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Computer turns on and off in 1 second

Last response: in Systems
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March 15, 2010 12:11:01 AM

Hi
My computer (which I built about 6 years ago) was overheating. So I opened it up, dusted it and removed the heat sink to check the silver. I re-silvered the heatsink and reinstalled it. When I turned on the computer, all the lights came on, the fans start, and the harddrive starts, but 2 seconds after powering up it shuts off. Any ideas?
Thanx

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a c 122 B Homebuilt system
March 15, 2010 12:34:51 AM

Go through all the cables and make sure they are connected.

It's unlikely that something coincidentally failed while you were cleaning, but it is possible. In that case:
Our standard checklist and troubleshooting thread:
http://www.tomshardware.com/forum/261145-31-read-postin...
March 15, 2010 3:12:54 PM

`Hi followed checklist....everything seems fine, but it still turns on for a sec and then turns off. Any other suggestions?
!