that's an interesting mobo, from what I read about it it is set by default to socket-754. this means that your RAM has to be in the slots (2 slots total) next to the 754 socket.
***if you are using a socket-939 CPU, then your RAM has to be the slots (4 slots total) next to the 939 socket, and all the jumpers need to be moved (both data and power distribution)
Given the specific mobo you're using, it would seem likely that all your components are fine, you just may not have it set up properly (a mobo like that can be confusing)
We need some more specs:
1. CPU model (939 or 754)
2. RAM model (brand and model#)
3. PSU specs ("my PSU is 450" says nothing about it, like I said in my post above total PSU wattage means nothing. what brand is it and how many amps does it provide on the +12v)