mousemonkey, I am having the same problems as Mstngdrew232. Same card, same symptoms.
I replaced my PSU with a 600w unit, and at first it didn't have any effect. But a few hours later (after calling BFG for an RMA) it worked properly again! I don't get this - why did it take a few hours for it to start working properly? I don't really trust it, and I expect it to fail again imminently. The tech support rep at BFG told me that based on the symptoms, my card was shot. (I was seeing artifacts on BIOS screens, but they are gone now)