Using online tech support now, will update how it goes
Well several hours later and no further forward. The support agent was really good and I felt more sorry for her not being able to get it installed than my own disappointment. Tried every means including the clean install method to no avail. I did refer her over to this forum which she had a good look through. She is filing a report with the Tech team to see if there is a bug somewhere and advises a fix if issued will go out with next updates. I did have option of reinstalling Windows but said I would leave it for now to see if MS can resolve it otherwise I can reinstall at a later date.