I then removed the hard-drive from my own computer which runs Windows 7 and inserted it and nothing happened, the machine posted but nothing after that, I have reset the default setting in bios, removed the cmos battery, tried removing one piece of ram at a time but nothing works. The PSU is not the most powerful but it still should have plenty for this build as the cpu is not over-clocked.
The Spec is:
Gigabyte GA-G31M-ES2L with Inbuilt graphics http://www.ebuyer.com/product/152225
Core 2 Quad q6600
4GB Kingston 6400
Arctic Power 500W PSU http://www.ebuyer.com/product/124922