Replace the motherboard.
Or if you refuse to believe that the board is a defect, you can try installing two cards of memory in the two slots closest to the CPU. (ignore the instruction manual)
You can also open the bios settings, and shut off "cool and quiet" feature, check the video memory allocations, etc...
There is video settings in the bios set-up. But I would not bank on it solving the problem, try if you want.
The big advantage to using a different motherboard is that it will start up and work on the first try....With no further goofing around.
The EVO, power saver features, generally don't work. It reduces so much power that the system can't maintain operation. Shutting off all the power saver features in the bios will sometimes make the thing work, for a while.