mikewithpaws

I know this may seem like an obtuse place to put this-
but since the sound is coming through the HDMI, and thus through the graphics card, I'm a bit stumped. To make matters weirder, I am unable to watch video files on my computer unless I install the voodoohda .2.56 or .2.61 kexts- though they don't allow me to hear anything, either. I've looked everywhere for an answer to this so I thought I would try here.

System:
750 gb hdd
8 gb ram
core i3
ati 5450 hd

I should mention that I have onboard audio and a soundblaster audigy card on the board but neither of these are being detected either so I am focusing on the HDMI as this would be my preferred means.

When OSX first loads it recognizes the graphics card right away, though since I was convinced this was an issue of the graphics card I tried changing it to the 5400 instead of the 5450 series with no change at all. Please help as I'm totally confused.