You probably also have PC Help & tools? If you do, try the application recovery to re-install NOrtON. After it is installed, uninstall live update, uninstall NOrtON, then check Add/Remove programs once more for any Symantec entries and remove them if necessary. Then search computer for NOrtON, delete files. Then search computer for Symantec, delete files. Install McAfee and look for a registry repair utility. I use CCleaner as I am a beginner and this is a "soft" repair utility. They also have an excellent site for support on using the program and will go out of their way to help you. It also gives you the option to save a back-up of your registry in case of problems, which is highly recommended.