To be more specific, the games were workin fine but juz a week ago my com suddenly show a screen statin "Overclocking has failed" but i didnt and dunno how to overclock at all! After i went to the repair shop and e guy said everything is ok i tried playin my games and den whenever i start a game,my com would automatically restart itself.When i play less graphically intensive games it can last around 5mins b4 it restarts again..i dunno wad could be the problem..any help is greatly appreciated~