Attached Link: http://www.ccleaner.com/

Yep, I'd second what Vince says about Norton, really screwed my 'puter up on a number of occasions. I use **Ccleaner** for all registry type issues and fixes, it's free [link attached] I also run Windows defender every week and  a Virus scan using AVG professional.

Injustice will be avenged.
Cofiwch Dryweryn.