I’m back after encountering a major problem. I did get rid of the WNSO, but when the pc rebooted afterwards, it wouldn’t boot up. I was missing a windows file, couldn’t boot into safe mode or any other mode. I tried to use the Windows Repair, to no avail. So I decided to just bite the bullet and wipe the drive clean (it hasn’t been done since I bought it 2 years ago and has been running slowly) and start from scratch. I’ll keep in touch to see if anyone else gets hit by this WNSO. And I will keep using Avast… Mark