I recently got a new Q6600 and a XFX 680i LT SLI motherboard and installed it along with 4 gigs of DDR2 corsair ram. When it loads up windows XP it crashes while loading the operating system. i tried installing 2000 pro back onto the computer and it was stable until I updated to SP4, at which time it began to crash again. I'm not sure what to do other than reformatting and starting from scratch. Anyone had this problem also? Please help me because this is frustrating me to no end!!!! Thanks in advance.