WE HAVE SOUND!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I shut down the machine (again) to make sure I was talking correctly about my SATA3 usage (yes, my SDD is using it). Rebooted, and all of the nVidia lines are back in Device Manager. I was really disappointed, but thought I'd try unplugging the speakers and plugging them back in to the front. I got the pop up window to confirm I was putting something in the front. I confirmed it, but still didn't have sound. At that point, I got distracted by a phone call. I tell you that, because when I came back about 3 minutes later I went to do a search in Internet Explorer. When I hit enter, I heard the 'click' sound through the speakers. I don't understand why the delay worked, but it did.
So, I do have SATA3 being used. Device Manager tells me the driver isn't installed. I tried having it search for the driver, but it couldn't find one. I can't find anything about it on the Gigabyte site. Where should I look?