Hi guys,
Many thanks for your responses, they are much appreciated, a definate feling of not left alone to ponder. Latest state of play - I switched on in hope today

, and it has decided to let me in. I don't know what happened, I didn't physically do anything other than left it for an eeeeenorrrrrrmously long time, and then switched off in despair.I am not an IT expert, and didn't physically do anything, but all seems okay at last. Maybe for anyone else with similar problems - it might mean waiting, and waiting, and waiting, and then some. I must say the wait was worth it - now I can enjoy and explore. Again, many thanks for the time in responding.
Sweep