The specs being as they are, everything looks plenty compatible. That doesn't seem to be the issue.
Sorry for asking the obvious, but have you checked the memory sticks one stick at a time? In different slots? If everything else was working together, maybe the board is the problem.
By the way, did you re-install Windows? You absolutely have to do that when you change your mobo! Sorry again if you find this condescending but I'm just trying to cover all angles