Well i have to have two things checked... one of mine is sound device, and the other is a video card thing.. if you scroll the the right look to see where the things are loacted on the hard drive. If you recognise the diredtory and want it there.. leave it. I know norton loads files through there, ati, and nvidia. But if you uncheck everything and everything works fine... your ok. Your computer will never put a required system program in there.. uncheck away!