Hi Budapest thank you for your reply, I haven't tried it on another PC, but I think you are right that it is the monitor, as there has been a futher development last night when the screen kept going blank i.e totaly black sometimes just a flicker other times a few seconds, then when it came back I was exactly where I was, so if it was the pc It would have had to restart.
So thank you very much for your help.
Best regards Deen Lla
(Deen = need Lla = all ) stands for need all the help I can get. you were the first to do that Thanks.