BeOwner can give you permissions to do anything you want to any file and folder on your computer, allowing to Mass changing permissions to a list of files and/or Folders (including all subfolders and files within).
This tool is giving the ability to open files and folders that windows is giving "permission denied" error.
After getting permissions you can do anything you want to Files and Folders: Delete, Rename, Move, Copy, Replace, change attributes and so on..
Download it here
(There is a free version available)