that’s very unfortunate however in order to be able to help you we would need to know a little bit more about how did you get into this situation.
Ideally if you could describe what steps did you take and which actions have you performed in Cleanup before you got into it?
Plus if you could provide us with the log files it would be highly appreciated.
Log files are stored here: c:\ProgramData\AVAST Software\Tuneup\log\ and you could then upload it either to your favourite file share or you could use our FTP server ftp.avast.com/ftp/incoming/ (login: anonymous).