Monitor going to no signal mid game.

demar3214

Distinguished
Dec 31, 2011
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Case: Coolermaster haf 932
Motherboard:Z68A-D3H-B3
Processor: I3-2130
PSU:XFX Core Edition PRO850W
Video Card: Gtx 660ti
Ram: corsair vengeance 2x4GB
I built this pc about a year ago and just recently(less than two weeks ago) My pc would randomly and unpredictably either turn to a black or white screen or go to no signal.
Some times a looped sound comes through my headset when this happens. Once this happens the pcs fans are still running and the hdds are still moving any help?