Question Author
I think I'm going around the bend, Jim !
Hadn't used the machine for a few weeks and thought it would carry on as it left off; adequately charged.
After charging for a couple of hours it started up ok but is very, very slow. I now takes several minutes to start any programme, whereas it was previously quite fast. Anyway, it wasn't the dreaded ransom scam to unlock I was worried about.
Sorry to have wasted your time, Jim. Have a great Christmas.
Cheers.
D