I have made sure that CCLeaner is the latest version.
I made sure it was on entire drive in the option. Slected the drive then clicked ok.
I then get a pop up window which has a box to type something in with nothing t state what needs to be typed in. and has two buttons 'ok' & 'cancel' the ok but can't be clicked and the cancel button does cancel.
No only the one I want to blast clean! It was previously someone else's computer hard drive. The only one in their machine and had loads of corrupt files & pups!
not quick format -> standard format -> since an update for a while w7 and newer can format a drive with standard format and the drive will be filled with stuff