|Dump Norton. There are a lot better Antivirus software out there, many are free. Scan with Malwarebytes (free version) in safe mode. If it cleans you up, restart, uninstall Norton, and install AVG, or Avast (both recommended here often) (my preference is Webroot, but not free) and use Malwarebytes when you suspect something more is needed.|
You have to be a little bit crazy to keep you from going insane.
If all else fails, read instructions.