onkyo tx-sr605 geforce gt430

For the life of me I can't figure out why i'm not getting the hdmi feed from the nvidia geforce gt430 going into my onkyo tx-dr605, then out to my Sony Kdl nx46 led tv. If i go hdmi directly from pc to tv, all is fine. I know the onkyo will pass it through that port because i've had an xbox hooked up to the hdmi port on the onkyo. The monitor out works because the xbox is hooked into hdmi port 1 on the avr. Any Ideas? Im trying hear but i'm not sure what to "double check" at this point. I have tried assinging different inputs from cbl/sat, to vcr/dvr to see if it passes differently; no go. Have tried turning off tv and and receiver; no go. Help.

Yeah, I currently have dvi from gt430 to hdmi bravia. Then optical from my mobo to my onkyo. But the whole intent was for me to run one cable via hdmi to my tv. I think its an 605 pass through issue to be honest. Keep running into this problem with random equipment.