Hello!
I have a disturbing problem, I now have a rock stable clock on 4,2ghz (21*200) @ 1,36v HT on.
But if I turn C1E or C-State on then I get BSOD on boot, or within minutes after entering the OS (win7 64).

The system is as follows:
P6T Deluxe v2 with 0006 bios (same with 0406, 0504 etc).
i7 920 D0 (cooled by a thermochill 120.4, ddc 3.2 etc)
Corsair Dominator 1600mhz 8-8-8-24

Anyone know if there are any solutions?
Perhaps someone else had this problem and fixed it somehow?