Thanks M.
It seemed to work but it all went pear shaped again. I have grave doubts about suddenly changing the status quo. I somehow think there might be a driver problem. I also got 3 blue deaths and used safe mode which enabled me to go to a point this morning where system restore took me. Straight back in!!!!!! Glory be.
Just about to go walkies for new updates of software. Something I reckon must be done now and again!
PPP