Ok about to add somepics too.
What it is, is that I have had a new mobo for ages with a quad core cpu since my old socket 775 wasnt quad core compatable.
Anyway the only thing holding me back was the case to motherboard connection was different on my old mobo, i.e a single block instead of seperate.
I finally tried filing it down and put new mobo in case but no power is going through to motherboard, the led on back of psu is on but no power goes to the button at front so maybe its wired wrong.
Pics up in minute