Clapton is God, lotvic, I'm sorry, I made a complete mess of that.
<Has it ever been "working fine" whilst in the possession of your granddaughter? Yes, it did have a HD when she bought it and she has had it for some while, it has been fine, but she turned it on one day and got that message. F1 -F2
Thanks for everyone's advice. As I said at the beginning, "what do I know about laptops". After removing about 10 minute screws from the bottom of the case, and spending about 20mins trying to get into it, which I did, I found a covered slot on the outside of the case, secured by another tiny screw. On investigation, I removed the cover and found that the HD could be slid out from the machine. It did not appear to be seated correctly, so after a little guesswork, persuasion, and pressure, I tried the machine again and "Bingo" its working fine. I am now the favourite grandad! all I have to do now is find out where the tiny screw goes that I have left over! Thanks again.