A child played with my PC and now the display is upside down. She has no idea what she did and nor do I. Now running same PC from my backup drive. Backup is bit old (my fault)so I don't want to just clone if their is an easy fix. Your suggestions welcome.
I swopped the drives in bios to be able to see the screen the right way up in order to enter my question (Rather than stand on my head) :-)) The answer was very simple which I was hoping for but I did not know this when I asked. Thanks Flat Earther, solved.