computer shuts of at ranfom times.

November 3, 2011 at 15:58:42
Specs: winxp, 555 phenom
My computer seem to shut off at random times. I caught it in the act once and the power supply was hot. When I turned if back on it shuts back off with in seconds. My natural thought was to replace the power supply. Turns out that didn't fix it. Now I'm lost as to what it could be. This is an AMD 2.4 dual core opteron ( not over clocked ) with a gefore 8800 using only one 6 pin 12 rail. The power supply ( 750w ) has a high amp rating and should have no troubles running it. The system can shut off anywhere from 1 to 7 days apart, its never consistent. It even shuts down when the system is at sleep.

cpu core 0 56 c
cpu core 1 56 c
geforece 74 c
hd 35 c

Any ideas

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November 3, 2011 at 20:29:14
Evaluate, troubleshoot, don't just assume and replace parts that might just be good still.
Install Speedfan or similar to monitor your internal temperatures. Post back results, especially if hot.
Run Memtest86 via bootable CD to test your memory for errors. retest with one stick of RAM at a time if you get any errors. Replace as needed.
Run hard drive utility from hard drive mfg's website to evaluate your hard drive (also via bootable CD)

Oops. Just saw your temps posted, sorry. If those are typical, it is probably not a thermal issue.
Check your memory and hard drive, if they both come out clean, suspect the power you are plugged into as the problem (cannot be software related if it happens both on and asleep). Get a small plug in power tester that will show you through colored LED's if you have a ground fault or other power issues, if not then consider using a UPS to cover small power fluctuations that can cause the problem.

You have to be a little bit crazy to keep you from going insane.

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November 4, 2011 at 09:11:18
thx for the tips, I have it on a power supply that I have not tested. Maybe its going bad, will try to swap it out for a test. I'm pretty sure mem or good, but will run memtest for a good hours or two.

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