The A7N8X Deluxe seems to be pretty picky, mine has acted kinda odd too. Personally I would suggest you flash your bios to 1005 or 1006, then set everything in the bios to the default setting and reboot. Then change one thing at a time and reboot. And I do mean one thing at a time ie: change system performance from auto to user defined and then reboot, then change memory frequency from by spd to 100% then reboot. Basically change everything from auto to user defined, and/or whatever you want to do, then start changing the numbers,... rebooting after every single change. Dunno why, but it does work better this way.