CCleaner disables charms bar and start button after regular cleaning. This is a major issue for me. It seems that CCleaner may have caused this problem.
Steps 1. Run CCleaner regular default...
Step 2. Closed CCleaner
Step 3. Charms bar not working, then shortly after start button not working.
Please figure out how this could have happened in Windows 8.1.... And I am not really good at debugging either.... Yep I am never going to use it again until it's fixed.
Edit 1: I also have the latest version of CCleaner...