9800 GX2 doesn't work, tried two already

[dEaF TO LiGhT]

I built my new PC, and when I put the 9800 GX2 in, it wouldn't boot up. I just get a blank screen and one short beep. I thought it might be defective, so I bought another one to test... same thing happened. Right now I'm using a temporary PNY GeForce 8500 GT card until I can figure out how to get my 9800 GX2 to work. Could it be the power? I have 750W, which should be enough. Here's my specs:

750W power supply
Intel Core 2 Duo E6750
ASUS P5K-E WiFi AP motherboard
2 Seagate Barracuda 500 GB SATA hard drives
Samsung Lightscribe DVD-RW SATA
Floppy Drive
Thermaltake Armor Series VA8000BWS. Has 4 fans.


Anyone know what's going on? I want to get my 9800 GX2 up and running

 

[Triple6]

What is the brand and model of the power supply? Do have access to another power supply? Also are you running the latest BIOS for the motherboard?

 

[dEaF TO LiGhT]

don't have access to another one. i'm using the second latest bios that came out 12/07. I see there's one that came out 1/08. I can try it, but since the january bios hardly newer, and came out before the vid card, i don't think that will help.

it's the coolermaster realpower pro 750w, not 850 (whoops)

 

[Triple6]

Did you have any trouble connecting the two power connectors to the video card?

 

[dEaF TO LiGhT]

noope, fit perfectly

 

[Triple6]

Well then I guess I'd be trying another power supply.

 

[dEaF TO LiGhT]

I had to use the lower DVI port. Normally I would feel like a ******* for missing such an easy thing... but not really -- it's not like they make a note of it in the instructions. Thanks for all your help!

 

[accat13]

LOL trouble shooting 101 try the simplest solution first....We've all missed the small things...Ps enjoy the new card
guess you can mark this as solved