Hi Wolfie,
After reading your post on CCleaner and reading ComputerActive magazine recommendation on CCleaner, assured following their instructions on the programme, all junk is omitted, well tell that to the marines as the saying goes. Avast antivirus software is included and installed for one and near impossible to remove. After, much fiddling, found only solution was a Restore, to my relief this was successful. Some years ago, obtained Avast removal utility that was guaranteed to erase all traces of Avast, well not on this instance. I liked CCleaner when Periform were the writers, but since being taken over by Avast, this no longer is the case, now full of junk programs and force to buy the Premium. Have you tried the latest version?