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I have a HP Pavilion dv5000 that is shutting down unexpectedly. I stress tested it with a BartPe CD (UBCD4Win) using Prime95 and it it ran at 100% CPU for hours without shutting down. This rules out the the CPU overheating from being the culprit.

I'm wondering if the GPU is overheating and how I would go about testing for that.

Ideas?

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Let us know what the culprit was! – Jim McKeeth Mar 5 '10 at 0:52
1  
@Jim-McKeeth: It turned out to be spyware, which I'm busily removing now. Thanks for the solid leads on the GPU stress test. Another tool for the toolbox! – ssvarc Mar 5 '10 at 18:16
up vote 6 down vote accepted

Furmark is a free GPU stress test utility that is pretty good.

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Almost any modern 3D test.

Especially ATITool http://www.techpowerup.com/atitool/ Its work good for ATI and nVidia Cards. Can automatic test artifacts and overclock video card.

Also 3Dmark and etc...

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It's quite old now, but I like to test GPU performance with rthdribl (Real-Time High Dynamic Range Image-Based Lighting).

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You also have Video Memory stress Test (which is included in UBCD)

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You can try Kombustor, it's light, provides all essential infos in an overlay in-test and it's highly adjustable. Here is a version that I keep in my Dropbox : https://dl.dropboxusercontent.com/u/6015601/MSI_Kombustor_Setup_2.4.2.exe

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