Well it's finally got me! I've been holding off installation as long as I could.
Was using the PC a couple of days ago and had a pop up message saying V10 install was starting in an hour. (Didn't even realise it had downloaded, my fault I know for not changing the download settings). I closed the pop up window, carried on working and all was well.
Thinking about it I probably shut down before the hour was up.
Anyway, was busy working away this morning when same message pops up.
Did the same, closed the window, carried on working and,you guessed, screen goes blank, message appears, windows 10 installation started.
Probably means I've lost all I was doing (I know I should have paid more attention to the message).
Wouldn't mind so much but was working on something I need for the weekend, and I was already behind schedule.
Will probably lose another day now trying to get everything working.
Anyway I'm off out to enjoy the sunshine for a couple of hours and leave Windows 10 to do its worst
End of rant.