Norton Antivirus Software
Since you say that you uninstalled your old Norton Professional Security program, I think that you probably used Windows Add/Remove to delete the program, but that some files are still hanging around. If the Norton Professional that your computer is failing to locate is not the Norton program that you thought you removed, then it’s possible that you inadvertently allowed the program to install via the Internet. Norton and Symantex programs are infamous for being hard to remove, most likely a security guarantee most of the time, until you want to get rid of them intentionally.
Use a Registry Scanner to find and resolve problems
If you have tried searching for Norton files and not found any, then you might next want to try a registry scan and edit. Your computer’s registry is a log of all the applications and executions that you run on your system and, in time, the registry can become cluttered with old and irrelevant bits of information. We recommend a registry scan called RegCure that will clean your registry and remove any unnecessary bits of code.
Norton Removal Tool
To remove the program, if these other possibilities fail, you can download a program removal tool from Symantec here. This page offers a range of detailed steps depending on the version of Norton that you are running. The Norton removal tool will get rid of a failed or corrupt installation.
Steps to use Norton Removal Tool
Once you download the Norton/Symantec removal tool the program will load an icon on your desktop. Close all the other programs that you have open, including your Internet browser, so either print or record this page. Click the icon twice to launch the program. Follow the guide that opens and complete the instructions. If asked, restart your computer. Now, remove the tool icon by dragging it to your recycle bin. Next, open your Start Menu, then search All Programs for any Norton files. If there are any, remove them. This should work to get rid of the program and you can then load your new Norton program.
Remote Technical Assistance
If you are still having difficulties, or if these steps are unsuccessful to remove the old Norton program, you might consider seeking remote support. At Filetonic, we recommend the assistance offered here. These technicians are available to discuss your problem live, and guide you through the issue.

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If you have a virus on your computer, you need to remove it from the system. Since the virus that is on your computer has already taken over your Norton application, this is most likely the reason your new version won’t load and run either. I know that you say that you cannot use System Restore, but, I would like you to read what I have to say and try it once more. Then the next strategy is to attempt to remove this virus and any others full force.