Having problems with TUV4X and GeForce FX 5600 (256MB).

Hey pipl,

I'm having some problems with my setup here.
I have P3 900 on TUV4X motherboard, 512mb of 133 memory. Right now the video card is GeForce 2
GTS with 32mb on it. It's running on AGP 2x.

Yesterday I bought a new video card GeForce FX 5600 with 256mb on it and started installing the thing.
First time I run it I got prompted to BIOS right away and looked thru all of the settings and all of them were
fine. In the AGP Capability I had 4X set up and in the Graphics Aperture I had 64MB.
Well I saved and exited from the BIOS and that's it. It does not work... The video card just does not start. I
can hear computer running but there is no signal coming from the card.

What can this be? Any suggestions? Except of taking the video card back to the vendor (which I'm
planning to do but first I decided to check here)...

Thx in advance.