What i've done in the past is run the norton uninstaller, reboot and then run CCleaner to clear out the registry entries.
You might have to start in safe mode to run the uninstaller, but I'm not really sure on that.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?