so i just got my ne pc it ran fine till i put a new gpu in it today.wen i run a game an internet browser it turns of with in 30seconds-1minute but yesterday with my old gpu it ran fine with game an browser open im thinking its the gpu but if i only have the game open it runs perfectly fine some one please help my specs amd fx4150 125watt 4.0ghz 4gddr3 patriot viper extreme msi 760gm p34 550atx psu amd radeon hd 6700 my old gpu was a amd radeon hd 4350