I had problems with a asus board back in 775 days and it was brand new same model as you have there the problem was she turned on and past 2 3 minutes bum off i updated the bios the problem went way but ervery single time i turned the pc on it was slow as f.... to load Windows xp. Than i got pissed and switched for an xfx 780i and my c2d e6750 with 2 gtx 8800gts on sli worked without any problems. Except the sli ones but that was on me.
ok I have decided on the final specs of my retro pc build (windows xp) i5 3550 4gb ram HD 7770 1gb ALL POWERED BY A 1000W PLATINUM CORSAIR PSU MOOHAHAHAHAHAHAAHAHAHAHAHA pc will probably draw like 100~200W tops