Hi Cypherus,
Many thanks for that. I tried but they are not going - stubborn sods. Do you know of any other cleaners?
Whatever I try to do to the files brings up a "cyclic redundancy" message just occasionally it asks me after opening the file if I am sure I want to format the c drive.
That might be the only option but as usual I have so many programs and data it would take for ever.
Regards