Hi all
Larkshall - yes I tried all that but no use.
Mickstani - yes I will try re-installing graphics drivers and run checkdisk, although I have system mechanic installed and I would have thought that would sort it. It is well out of warranty, in fact my wife has worn several of the letters off the keypad!!!!!!!!
BarriedaleNick - Oh yes I should have thought of that, I have done this before so will check devise manager. I have tried it on all resolutions and it is on the best available.
I will have a session with it and report back.
Thanks to you all.
Ivor