Yeah, tried booting with no RAM. Even tried booting with no CPU. Nothing I could do would produce beeps. I suppose I may as well try firing it up outside the case. I've already pulled it to send the motherboard back to the manufacturer for RMA. I was pretty fortunate there. Although the computer itself is not under warranty, Asus provides at least a 3 year warranty on all their motherboards, so I only have to pay for shipping. Much better than replacing a $300 motherboard, though. I'm still worried that the motherboard will come back and I'll still be in the same boat because the actual problem was the CPU or videocard. But I sort of doubt it. I can't imagine why one of those problems wouldn't be producing beep codes, even when I tried to boot with those devices removed entirely. So at this point, I'm leaning heavily toward motherboard. I'll throw it on a piece of cardboard and try to boot, though, just to be sure. The RMA is going to take 10 business days, not including shipping, so if I can figure out that the motherboard is fine before shipping it off, I'll be pretty happy.