Since the installation of Windows 10 (from Windows 7) a few weeks ago, I've been having trouble trying to delete duplicate files, using CCleaner. Most of these files have 'old windows' in their text (probably relating to my now defunct Windows 7). I have never had so many duplicate files since the upgrade (maybe 300 or more). Every time I try to delete them, they just won't budge! I've uninstalled and re-installed CCleaner, and even carried out a system restore of my whole laptop, but they remain. Any help on this problem would be much appreciated. Thank you. Peter.
