can anyone help!! keep getting bsod say machine check ex*****.on startup .when system does boot up runs fine .ran mem test no probs ran prime95 for 24hours no probs. i think its software prob but can't find any probs any ideas my system is-3500 winny,asus sli deluxe mobo,balistics pc4000(1gb), x2 xfx6600gt's,deskstars 160gb x2 run in mirroring rade. thanks nik