I've tried the free trail of AVG PCV Tuneup and did the one click clean up. My computer now won't restart Windows properly and it's asking me for a license key? I know how to uninstall it but I can't get to my control panel, or anything, without a key!

Nicholas, Have a look @ this article (https://support.avg.com/SupportArticleView?urlname=How-to-restore-changes-made-to-your-computer-by-AVG-PC-Tuneup).
AVG Guru

Nicholas, Have a look @ this article (https://support.avg.com/SupportArticleView?urlname=How-to-restore-changes-made-to-your-computer-by-AVG-PC-Tuneup).
AVG Guru

Hi Nicholas,
Please provide us with more information (detailed description, screenshot) so we can better understand what issue you are dealing with.
Thanks