Hello Eddy - thanks for responding
(1) Yes - system date and time appear to be correct
(2) McAfee Removal tool - now this was 2 years ago. I wouldn’t have just done uninstall from windows control panel. If I know me I would have google what to do and done what was recommended. It rings a bell that this was a McAfee uninstall utility of some kind, but I am unable to confirm.
(3) Yes - I removed the old AV before putting a new one on.

Thank you Pondus - I’ll go through these and uninstall everything

Thank you Bob3160 - I’ll then follow your instructions.

Fingers Crossed.

I’m guessing you all think it’s not a lost cause - easy to despair when software takes up more of your life than you were intending. Thanks for your support.

Best wishes

C