I have a Dell XPS with a NVidia 7300 LE video card. I am getting all kinds of green and purple lines through my screen. Some of the lines follow my cursor around the screen as well. I have tried to uninstall and reinstall the drivers, but it does not help. I have disabled most of the drivers at startup to see if another one was conflicting with it, but that did nothing to help the situation either. Is my card overheating? Thanks for any input.