I would be highly suspect of the RAM or video card. Try running one chip at a time in all of the slots to see if you can get any signs of life. Also , try running no RAM to at least get a beep code that lets you know the board is working. It's possible you have some of the older OCZ ram that defaults at 2.2V and your BIOS is not supporting it by default but I was under the notion that OCZ had already taken care of this issue.
If you don't have access to any other RAM, take the box to a shop and have them test it with different RAM. If that fails, see if they have an old video card lying around they can test in it as well.