Not sure! The MacBook is 5-6 yrs old, but original system might have been changed. I guess (hope!)there may be a simple way to find out
Nothing different. How immediately do I need to hit the key on restart? I did it once my background picture had reappeared, should I have done it sooner, when the computer first shows a sign of life?
Thanks Ashik. Just completed! Have managed to recreate new account & can access old as well. There's now some query about my "Keychain password" but I think I'll have a rest & search for that later. The sun's still shining & I now need to get outside for a bit! Many thanks for your help.