this problem is really weird. i can run my PC perfectly fine at 400x9. though when i try to run 450x8, after about a minute of being on it just locks up. sometimes it sits frozen, with the desktop viewable. other times it just reboots. i dont know if its a hardware issue, or a windows 7 issue but ive used 7000,7100 and 7127 now and they all do the same thing. no matter what voltages i use, or settings i change in the BIOS (BESIDES CPU FEATURES) it screws up. Is there a way to make windows 7 not notice the cpu features? i HAVE to have c1e, executable bit, thermal management and one other running along with virtualization in order for windows 7 to not take a on me. has anyone else had this issue???