Sorry dude I'm out of ideas.
I'd call ASUS and dig deeper with them.
Did they send you a brand new board? Did they refurbish the old one? If the latter perhaps they failed.
The other hardware in the equation is the PSU and the CPU.
If you boot with no RAM and do not get beeps or another POST error LED then something is still wrong with that board. Assuming the PSU and CPU are good.
Don't know what else to add at this point. Did you try taking it out of the case and attempt a boot on the off chance of a short to the case?





Didn't you say that your ram worked in another computer. If you're ram worked in another computer then nothing is wrong with it but if it didn't it could be that it isn't the correct ram for the other computer.
