What bios are you people with these new 45nm chips using?

Installed my chip with 24/12 on and it worked ok. Booted up went int bios and changed my hdd settings and a few other things, didnt change any cpu or ram settings. Saved and restarted and nothing, error codes all to crap. Was just stuck on a 1 second boot then stop loop. Reset bbios with jumpers same thing, took battery out and left it a while put it back in, no difference.
So i put an old P4 chip in to make sure the board was ok and it booted fine.Flashed bios to latest beta 1/09 and put E8400 back in and same crap happens.
Had battery out for 2 hours earlier still not going right but managed to get working after pressing the ezclear switches for a bit. Dont wanna restart now in case it dont work again.