I recently upgraded our Dell Dimension 8400 from XP to Win 7 and now get a Code 43 on the NVIDIA device.  I've searched all the forums, downloaded the latest driver from NVIDIA (260.99), etc.   Still Code 43, which means the card is not active.   The computer is usable, but not nearly the video speed and quality from before the upgrade.   Any help would be GREATLY appreciated.

Thx

Dave