Have now tried everything (i believe) you guys have said.
Tried booting up with no gfx card and 1 stick of ram, everything lights up as usual fan starts, hard drive powers up and then the annoying no signal message pops up. Same as when all i do is leave one stick in.
Also to see if it was the monitor i used an old lcd one i had lying around and still no signal.
However i think as cvb724 said it must be the board. Found an old quad core board that was used on a previous built machine (upgraded it as it only has a x8 pci express slot) and for some reason it boots up. It's a perfectly clean boot up as well, no issues at all.
So probably going to get hold of the people we bought the bundle from, get hem to replace or refund for the board and get an asus P5N board as the people i know who have them seem to have no issues.
Eclipse Computers - Product Details
If anyone has board that is a better price (It's £56 not inc del).
Thanks for all the help everyone