9800 GX2 Problem

Is the GPU new? Have you tested it in another system?
I've never had a problem installing my GX2 on other non sli boards. I know that's the problem. Seems like either the GPU or Motherboard is bad.

does your PSU have enough amps to handle it?

I have not been able to test the gx2 in another system, I bought it used so it could very well be messed up. I seems like it is on but does not have a picture. Also my psu should be able to run it. You said it will in fact run on a non-sli board though?

So you are saying that the onboard does not work either when you have the GX2 installed?

I remembered that some motherboards don't support the 9800GX2 without a bios update.

If you uninstall the card does your onboard work again? Have you set the INIT first display to PEG?That sounds weird though that your onboard would not work either.

I hate to say it but I am stumped. I have never heard of that happening before. I have tried to google it but to no avail, but I will keep researching though and see if I cant find a related issue.

in your bios make sure the setting for the pcie is on for the 9800gtx x2

I can say that by searching google that I have seen a lot of people running the GX2 on your board so you can rule out your board being incompatible. Its possible that your PSU might not be supplying enough power though as one poster stated, but thats a shot in the dark. It would really be nice if you had another PC to try this card in to see if it worked. Ill keep searching.

here is one user with a 9800GX2 on your board:

http://forums.guru3d.com/showthread.php?t=255531

Set on board as main display and see if the gx2 will show up in windows.

what is that 550W Logisys Arcylic you're running?
I bet thats your problem.

This is my PSU:
http://www.directron.com/ps550ac.html
The specs he linked to above has a 550W also, and would all the leds come on on the card if it was underpowered?

Perhaps the board is bad. When you plug in the power and start the pc up. The power plugs should turn to green and on the back you should see a green circle led above the hdmi port that is active. Please also note and yes i know you said you tried all the ports on the video card. But it will only come on and show with the bottom port used which has the hdmi plug on the same rack.

If you aren't getting all the green leds then the card is bad or your power supply is not capable of pushing it.

Okay, I finally got the card to come on once and windows recognized it. But, when the power is cut (turning computer off) it will not come on again. I took it out and put it back in and it come on, it survived a restart, but it went off again after a reboot.