Upgraded from PCI Geforce 2 to AGP Gf 4 and D3D won't work anymore.

[KValthaliondil]

I run Win98SE with 1.5Ghz and 512MB and I finally got my hands on an AGP card. I swapped my PCI Geforce 2 MX 400 for an AGP Geforce 4 MX 420. I have re-installed my vid Drivers and DirectX 9. I switched my IRQ allocation to AGP in the BIOS but advanced display properties tells me it is still in PCI mode. How can I correct that? Here is the error message I get when trying to start a game (Army Ops):
No Label

Video: NVIDIA GeForce4 MX 420 (4523)

Error setting display mode: CreateDevice failed (D3DERR_INVALIDCALL).

History: UD3DRenderDevice::UnSetRes <- CreateDevice <- UD3DRenderDevice::SetRes <- UWindowsViewport::TryRenderDevice <- UWindowsViewport::OpenWindow <- UGameEngine::Init <- InitEngine

Any suggestions?

Thanks
KV

 

[SYAR2003]

You have to totally uninstall all nvidia drivers
from your system first .
Boot your system so video only use standard vga driver .
Then install drivers for nvidia again .