PC shutting down hard randomly

matthew_nicho2

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Jul 10, 2008
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Hi all, my pc specs are in my sig.

I have had this problem for a while but now I am fed up with it. It will shut down randomly when in use and wont power on unless i turn it off at the wall for a bit. I did have a ocz stealthStream 600W psu that was getting on a bit so replaced it with the modXtreme pro 700W and still getting shutdowns.

You dont have to be doing alot for it to happen either, mainly happens when on the net!?! Can play borderlands and Crysis (maxed) for hours and is fine, go on a site with a bit of flash and poof. My cpu is OC'd and stable (8 hours of prime95), tested memory for 8 hours no errors, new power cable and new 10 gang power adapter (everything else plugged into it stays on). I have also wiped the hdd and fresh install but still happens.

It doesn't happen very often but need to figure out what is causing this to happen. Any help appreciated!