I found out the solution myself.
Just to disable the core multiplexing thing.
hi! i had the same problem. updated bios from 0079 to 0117. (wasnt easy: had to do the force update with jumper removed, using usb drive). afterwards windows 7 didnt boot, except i got a black screen after the intel logo. good thing i found your comment here...BUT...after disabling core multiplexing, i lost my dual core function. even in system information it say "1 core'. and it shows on my performance: itunes hd movies became horribly choppy.
did u notice any performance issues after disabling core multiplexing?
I just tried Bios 127 and this is still an issue with my board.. How can we get Intel to solve this.. I am running Q6600 without 2 cores now.. cus vista 64 wont boot .. gets stuck if I enable the Core Multiplex.
There must be a solution to this out there..