Alright... what the heck is up with my roommates computer?

[allies]

Alright... well my roommate has a computer that has been out of commission since the beginning of the quarter (he's been using my laptop).

At first, his northbridge fan died and his computer wouldn't boot up any more. We RMA'd his motherboard, and tried again. This time, we got a 1 long beep followed by two short ones. I looked up this problem and it said to check the display adapter. I tried to use his card on my machine, and I wouldn't boot. So we thought it was the video card. We RMA'd that, and he just got it today, and we're getting the same beeps.

So, where does that leave us? Could his power supply been messed up? His RAM? We tried with 1 stick, then the other, and it still wouldn't post. We stripped his computer to basically nothing, still didn't post. Could it be his processor? We have no idea what's up. Thanks for any tips.

His specs by the way:

EVGA GeForce 6800 GT
Asus A8N-SLI Deluxe
500W Ultra Power supply << honestly thinking this might be it...
2x512MB Kingston RAM
AMD 3800+ Venice
1x80GB HD
1x160GB HD



His computer doesn't post at all. While booting it beeps once long then twice short.

 

[ForumMaster]

beep codes.

seems like something is wrong with his graphic card. try a different card. try reseating the card although it looks like the card is dead.

 

[Nocturnal]

Might be video card. Try another or try the onboard if you can.

 

[AlgaeEater]

It's the only thing to try left, and it might as well be the culprit. I usually shy away from bad power supplies as being a problem in situations like these only due to fact that most power supply related problems don't even give a motherboard warning error (The beeps you hear), but because you both RMA'ed the motherboard and the video card, I wouldn't see why it couldn't be a bad PS.

Keep your motherboard in "barebones" mode by just leaving processor, video card, ram, and hard drive connected as you said you did earlier, it's going to help a lot when more suggestions come in, and you don't want to go through the hassle of working while inside your case.

 

[allies]

Any other opinions? I wish I had a spare PS around here :\