Thanks chaps. I am sorted, although to be honest I don't really know how or why.
I fiddled for a long time, got late for the bus to work and missed it. While waiting this bloke came up to join the queue. Not sure why but he told everybody that he flew Harriers. I said "That may be but can you fix computers?" He came round that night and now it works fine. All he wanted was some breakfast. Wonder if he has heard of PPRuNe?