One other thing, the Standby LED is on.
Try to jump start the PSU: http://seasonicusa.com/RMABeta/JumpStart/JS.pdf
This way you can rule out if the PSU is the issue or not.
If the PSU turns out not to be the issue and you are not even getting any POST codes, then you have a more serious issue and I'd probably initiate a RMA.
Thanks. This is a known, good PSU, being I'm upgrading the motherboard, proc, that was in the case.
I'll try breadboarding the motherboard today to see if maybe I'm shorting something.