I just picked one of these up for the gf's rig and finally got time to put it in today. Windows 7 RC is on her machine and the word "Windows" pops up, but before the colored dots that eventually form the Logo show up it just restarts the comp. Put back in her 7750 BE and it fired right into windows. So I updated her bios and it didn't do a thing. Both of these times it had recognized it as a 240 in the BIOS. So then I sit here thinking, is this really a DOA brand new proc? So I toss it in my comp... Anyone want to take a shot in the dark at this? Fired right up, I didn't even both stopping in the bios.