I got the pc from a friend and didn't install any of the hardware myself so I wouldnt know how he installed it. But the driver I think is Nvidia Riva TNT2 model 64 pro version 4.14.10.7184 I think that is it I don't know sorry. So I guess its software version is 4.0, I cant get to the nvidia tab unless I enable hardware acceleration and that makes the screen not work correctly