system
5
When I first installed Avast, Norton Anti virus was present on my system. After installing Avast, and re-booting, I was greeted with my system locked up tight. Your first impression, if you weren’t told this would happen, is that the offending party is the newly installed Avast. When indeed, it is two AV’s not playing well on the same system. A hard re-boot, and installing an image of my operating system partition before installing Norton, and I was ready to re-install Avast. Haven’t had a single issue since. If you don’t use imaging software, you can do a search for links on how to manually remove Norton. Good luck!.
Tipton