Thanks for the tip- I'm running & x64 Pro which I agree can be a bit picky regarding drivers.

I'm currently running 12.8, I'll uninstall and re-install the latest when I get home from work.  After I moved it to the crate and added the 7850 (It was running wirh 2x 7870's before) It wouldn't even let me OC the 7870's anymore.

I should have followed my own advice (Network Admin by profession) and re-installed before I asked...