I have a Windows Vista system with Nvidia graphics card installed on my machine. Everything was working fine, but just yesterday all of a sudden I started getting artifacts on the deskptop. I immediately started to uninstall the graphics driver, but as soon as I did it, my system crashed with a BSOD and it was giving error of nvlddmkm.sys. I was able to login in my system in Safe mode, and then i started uninstalling all the display drivers but reinstalled the latest from the nvidia site, but it didnt work. I even tried to install old drivers, beta drivers, but it was not working, just giving me same BSOD. I dont know what else to do, please help me.