When I went to go install Norton Antivirus, It asked me to uninstall the old version first. When I did that it gave me a FATIL ERROR and I restarted windows. I came to realize that NONE of my programs worked and the only thing that does is internet explorer and some internal windows components. I cannot use windows restore, and safe mode has the same problem. So my question is: is there a program where I can restore windows before the computer starts up? Or can someone tell me how to use the Norton 2006 emergency repair feature? OR is there an anti-virus that I can run before windows starts? Any advice is appreciated.