Well I've followed the instructions of HP and Jeff and have deleted the Orange default from Internet Connection, which also got rid of the Orange (Unavailable device missing) item in Network Settings .... and I have done this 6 times now, the pop up still appears, and the items I have removed/deleted are back where they were
Each time I carried out the removal of the Orange default in Connections, I checked the first option Never Dial a Connection, then removed the Orange default then pressed Apply and OK. I checked each time if the Network Connection Icon had gone, and it had, then I switched off the computer. On switching on again each time, the pop up appeared, the Never Dial a Connection had reverted to the second option Dial whenever a Network connection is not present, the Orange Default item is back and so is the Orange (device missing) item in Network Connection
I'm stumped ! My Monsieur who works for Orange is on holiday at the moment, but I'll get in touch with him at the end of the month if this is not resolved before. I don't want to be a nuisance to anyone here, and I can at least keep ticking don't ask me again until I connect and cancelling the pop up. One strange thing
all my Orange installation is in French but this pop us is in English !!
Many thanks everyone