So, my old card's fan died, and I had to grab a new one. Picked a 5670 up for a pretty good price at Best Buy.
Unbox, plug it in to the PCI slot, boot my PC. Power-on LED blinks, fan whirs, and nothing. Doesn't even load the BIOS logo.
Unplug the card, use the on-board VGA graphics to get into Windows and uninstall all of the nVidia drivers & install the Catalyst drivers (not that this should matter, but hey, I'll humor the manual). Plug in the card, boot my PC. Same result as before.
...Now, before I go on a rant about garbage ATI's products are (it's a shame they're married to such lovely architecture), I don't suppose anyone can recommend jiggling with any settings or downloading any updates for my BIOS? I've got Pheonix 6.00 PG on a Foxconn 662 7MA board.