Thanks for the ideas Kemical, You solutions are gr8 except my m8 built my pc and Windows Vista Ultimate worked fine at first. All the drivers are the latest and the 2 sticks of RAM work fine together. It's good a good cooling system with a temp gauge so it's not running hot. The fact it was working fine before I reformatted tells me theirs something wrong with the OS. It doesn't look like the complete version, it's missing Windows Aero, and chess doesn't work in 3D mode it crashes. I install all latest drivers and updates so it's the OS. My pc performance score use to be 5.9 or something and now overall it's 1.0 because it's not registering the graphics, even though it looks fine and the driver is installed. It's an 8800 Extreme card so it damn well should be higher than 1.0 lol. Is build 6000 the Final retail release or is it that bloody faulty? It also says when you install Windows that if you don't input the product key then certain programs and functions wont work, could this be the problem?

Thanks for d help m8