Arapab79: if you are trying to overclock this mb, you have to change many of the bios settings from Auto, or your system will not boot...or it goes into an endless reboot cycle...or reboots with default settings and you have to start over with the bios settings. Don't use Crucial ram, and be aware of bootstrap bug as described in this thread which renders some bootstrap settings useless. I understand this can be a tremendous m/b, but unless you are willing to study up and learn about the skews, sub-voltages, driving strengths, ect, for this board, I would recommend taking it back for a refund. I sold mine and got an Asus P5K Premium Black Pearl, which is so superior and user-friendly for o/c it is amazing! I've had my P5K to 585 FSB x 8.5 and it is very stable and easy to o/c. For 24/7 use I'm at 1.36v @ 4320 Mhz. Good luck!!