Thanks guys,
But after checking and reading your replies and doing the dance, I got an answer back regarding returning it, which is a shame because it was a really clean machine externally, hardly any scratches to bee seen.
Was sorely tempted to keep it and do the work, but then the thought of replacing the logic board and associated cost got the better of me.
So afraid to say ti been repacked and remailed.
Thanks for all the help though..we live and learn