try a ubuntu linux on cd-boot and run program administrator-->system monitor
if all core works, it's a problem of win-7 reinstall or modify flags or variables with regedit
ok tried that didnt work,and my knowledge of the register is limited.
it does however show up in sisisoft sandra benchmarkingtool,verry weird.
still it doesnt show up in the bios,only when i set hyperthreading to on it will show 2 cores,but since this processor doesnt support HT ,windows will crash on startup.
Any other ideas anyone?