Got it. Thanks. So really old 1,1 video cards won't work in the Mac Pro? What about a Nvidia 8800GT ? Found one of those locally on Craigslist.
I will flash the other card, but in the meantime, I just need my computer up and running. Willing to get anything really. I have a friend with an old 1,1 Mac Pro, so was hoping to try his card.
DANG IT! Sold my GT120 when I upgraded to the 970 thinking I'd never really need the boot screens. I was right for about 2 years....