Yesterday I switched from a E6750 with Gigabyte DS3 and 2 gigs Crucial Ballistix to a 2500K with MSI P67A-C43 and 8 gigs G-Skill Ripjaws. I did not initially reformat my windows partition with the new hardware. At first, things seemed to work acceptably. I was trying to get all my drivers taken care of so I was restarting a lot, but I didn't notice any freezes. A couple hours later, it began freezing within about 10 minutes of startup and it got progressively worse. Within another hour it froze immediately on startup and now it bluescreens after the Windows 7 loading screen. I've tried using individual RAM sticks in various DIMM slots but nothing seemed to help. Any advice on what I should do next? Thanks.