My System is p4 2.66, ga-8ihxp mb , 512 800 rambus, 550watt ps namebrand just forgot it( true ?) ,ti4600 ,40 gig wd 7200 rpm,win xp home all updates, went to turn on my system and seen a spark go from my finger to the on button,ever since then my games are freezing up for about 10 to 15 sec then the game will resume, it will happen on all my games every thing from majjong to lord of the rings to chaser . its a shame this computer has been rock solid for 6 months but stuff happens any help would be appriciated pjg