My board stopped seeing two of my cores the other day. I thort I fried two of my cores since I am still on stock cooling, waiting for wc parts to be delivered. After going back and forth in BIOS now and again I would see 4 cores and then next reboot two. It has been on four cores now for at least 1/2 dozen reboots and I am using 601. I wonder if it is the MB or CPU, any ideas?