the 10.4 drivers are fine, though did you make sure to run driversweeper in safemode after un-installing the NV drivers (i am assuming you UN-installed the NV drivers) since that could cause a problem
really i reinstalled windows 7 for best compatibility
it has to be drivers because this cards a beast in everything else like Gta 4 COD5
but the driver messes up some times saying it has recovered
sucks i have dial-up so if i re-download 10.3 it well take for ever!