its always worth with asus boards either trying to get rid of any static by disconnecting the power from the psu and pressing the power on button a few times.. I've been suprised by lights coming on, fans spinning up etc for a second or 2 when there is no power connected.
Also whip the cmos battery out and leave it out for a few hours. Can't remember wether this should be done with the cmos jumper in the clear position, try both.. Nothing to lose.
I've had a couple of asus boards come back from the dead using a couple of these tricks.
Also play with the ram, I just had a stick die on me and I was convinced the mobo was dead until started moving the ram sticks about and found out one was fubar but the mobo was fine.