PC Screen flickering & changing color?

ok..my pc screen flickers and turns to pink off and on..right now its ok..then all of a sudden it starts flickering to a pinkish color..I restart my pc and its ok..for a couple mins or so is all..right now its been about 5 mins..and its alright..even when I am not playing on it and its on..all of a sudden it starts... show more ok..my pc screen flickers and turns to pink off and on..right now its ok..then all of a sudden it starts flickering to a pinkish color..I restart my pc and its ok..for a couple mins or so is all..right now its been about 5 mins..and its alright..even when I am not playing on it and its on..all of a sudden it starts this..I even did system restore..didnt help..could this be my hard drive crashing? my monitor going out? TIA
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