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#11
Ok have you tried reseating the graphics card if possible? It may work on another slot if you have one. After that i want you to run this :
Graphics: Video Card - Stress Test with Furmark (Do the above Graphics test only with the latest drivers, and then Run it until the temperatures stop increasing; should be less then 10 minutes. If you don't see any crazy glitches or distortion on the screen, The test most likely passed. Take note if the Temperature gets too high, or you see http://en.wikipedia.org/wiki/Visual_artifact to stop the test.)