We just finished putting together an ASUS SK8N with an Opteron 240, and the damn thing won't post. We put in a geforce2 mx200 video card (1.5V AGP), and even with the IDE slots unconnected we can't get anything to happen. It's being powered by an Antec TruPower 480W power supply, so it's not that. The problem has to be with either the video, motherboard, or CPU.
Here's what happens:
1) When power is applied, the fans all spin up, the hard drive clicks a bit, but the monitor never comes out of power-save.
2) if we hit the reset button when the cd drive is open, it closes. Does this mean the nforce3 is seeing the reset and sending a reset down the IDE chain?
3) We've tried clearing the battery backed BIOS options, and that hasn't helped.
Any suggestions? I'm thinking #2 means that the motherboard is ok, but who knows. It could be a bum mobo. We'll try putting in a different video card tomorrow, but I'm going to be royally pissed off if it's the SK8N or Opteron.