Eraser is an advanced security tool for Windows which allows you to completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns. Eraser is currently supported under Windows XP (with Service Pack 3), Windows Server 2003 (with Service Pack 2), Windows Vista, Windows Server 2008, Windows 7,8 ,10 and Windows Server 2012.
Eraser is Free software and its source code is released under GNU General Public License.
Please note: When using multiple pass deletion, be aware it will take a while, but, you can be confident the files are totally gone!