Selling an old laptop of mine on EBAY. Did a fresh install of Windows 7. For some reason I cannot get permission to delete the "old windows folder" I keep going on to the security tab and setting permission for administrators to have full control of that folder, but it is still not letting me delete it. Always says need permission when I try to drag it to recycle bin. There is only one user account on laptop and that is an admin. Any idea what I am doing wrong?