In this weeks Computeractive magazine there is an article on W10. It says 'If you install W10 then you find you do not like it for whatever reason, you have 2 choices. 1, The installation process will by default, automatically save a copy of your PC in its current state (assuming you have enough hard drive space), If you find that you dont like W10, then you can restore your PC to its former self by clicking Start, then Settings, and then Update and Security. Select recovery on the left, then click Go back to a previous version of Windows. However, you only have a 30 day time limit, then you are stuck with it.' 2 The other way is what has already been mentioned on here and that is to create a System Imagebackup prior to installing W10.