My system had been performing fine and but lately require a reset when initially powering on. I suspected the PS but came to believe it was the MB. The ASUS tech agree and had gave me an RMA for R&R. Unfortunately the board still does not boot or post period. I just went out and bought a StarTech POST disgnostics card and all I see is FF. I have to go look into the BIOS and see what that means.
Hope you had sucess!