Ok, my proplem is my Core Temp and CPU-z are showing that I only have one core. I have a Gigabyte EP45-UD3R motherboard, and no I can't activate/diactivate cores in the bios. My driver is up to date, but my bios is not I have the F9 but there is an F11 out. I don't know if that's causing the problem or not, it was not before. If a bios update is necessary, I would appreciate if some one tell me how to do it, cuz I'm a noob at this. Otherewise any other impute is also helpfull.