last night i overclocked my integrated graphics to add juice to my fps from 1000Mhz to 1600Mhz manually by bios. I hav ASUS P8 H61 MLX3 R2.0 and on load, while playing splinter cell conviction, it went nearly 71'C bt after some time it came back to normal, then i shut it down.then this morning i powered on my PC, it displayed nothing! Then i attached my old nvidia gt 210 gpu, then the display worked fine, bt the integrated one is not working....can anyboy figure out what could have happened to my PC??