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blank screen on my screen

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my screen turns black or clear when I use my mouse, or my screensaver will freeze up and my video games freeze up,please tell me how to correct the problem!

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by valis

first i'd try is reinstalling video card driver.

also double check heatsink is securely and correctly in place on your CPU

by markhou

I would suspect a bad graphics card. Replace with the cheapest available or one from another machine for which you have install drivers, and see if it fixes it. If it does, you are done.

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