Update. New risers game in... same thing. So either some of the new risers are bad as well or that's not the problem. It started giving the the "claymoremienr... has been blocked from accessing graphics hardware" and then it crashes, goes to the internal video as the main display, and 3 of my 6 graphics cards go unrecognized.

Over 2 weeks now and still not working :/

I guess I'm going to try my 3rd motherboard now (biostar) and see if it's a gigabyte thing.