I ve got a GeForce MX 400 Graphics card, but my machine just wont take it whether I am running 98 or XP. I just dont get it. I have a P3 450mhz, 768mb Ram (Advent, Pc World). The card that was in it when I had it new is an ATI 3d Rage Pro. (Crap & slow) I downloaded the latest detonator drivers from nVidia, but my PC just Crashes when I put the card in. I have to re-start in safe mode and un-install the drivers and put the blinkin ATI back in. Its bloomin frustrating cos I want to be able to play games on my PC and the 8mb or 16mb ATI is not up to it! The GeForce is 64mb. Could it be the motherboard? Might i need to update the bios?