MSI K7N2 Delta 2 LSR mainboard with Leadtek 256MB 7600GT AGP

I recently bought a Leadtek 7600GT AGP 8x DDR3 256MB graphics card and installed it on a MSI K7N2 Delta - 2 LSR mainboard.

The problem is for games such as battlefield 2, the game hangs before i can start play while it's optimizing the geometry and shades, etc. The 2nd time i tried it the blue screen came up saying a screen dump.

I have changed the settings to "high" and set the resolution to 1024 x 768, but i can never seem to get the game to work under my new graphics card.

I've tried with a lower settings such as 800x600 on the new card but the game would hang again while optimizing geometry, shades, etc.

I've tried changing the AGP Aperature size from 256MB down to 128MB on the new card but it didn't work either.

I'm also running on a AMD sempron 3000+ with 2 x 512MB of RAM.

I've already updated to the latest graphics driver from Nvidia website and my BIOS is up to date as well.

Could anyone identify the problem? Thx in advance