When cleaning any folder or Recycle Bin of any .exe or .dll files the system hangs and is unresponsive when it encounters the first .exe or .dll file. It must be powered down, using the power key. After powering up, all files prior to the first .exe or .dll file have been deleted. I can manually delete the .exe and .dll files and empty the Recycle Bin, CCleaner does not delete them.