so i just upgraded to 64bit 7 from 32 bit vista. updated my 8800 gt's drivers installed firefox and a few gadgets when my screen would flash black and start bar would become a solid color then the monitor turns off and says no input. after a few seconds it comes back on (my cpu's core usage also spikes when this happens) ive never had this problem with vista and cant find any info on this any advice would be most appreciated.