I have a Ge-force 4 MX graphics card with an Iiyama E431s monitor. Once I had downloaded and installed the new drivers off Nvidia it went mad. As soon as there was movement on the screen my screen went black for about 2 seconds and then back on. I couldn't use the computer with my screen flashing on and off like this, so I rolled back onto the original windows drivers. The flashing has stopped, but I really need my graphics card to function fully in order to do much. Is it a memory fault. Or could it just be bad drivers?