Originally Posted by nicolasl46
I'm not familiar with that MoBo, but could it be that he is skipping a PCIe port? Would that affect him? Could the PCIe port be damaged?
It only has two PCI-E ports, even at x8/x8 it'll still detect the cards. Swapping them around should re-install them.
They'll be compatible, there's no reason they shouldn't be.
Try swapping them around in the PCI-E lanes.
I dunno if CCC has the option (or even automatically does) a Driver Sweep like function, where it clean installs (like the newer nVidia Drivers), but I'd suggest a complete cleaning of your older Drivers and the CCC, some old lingering thing maybe affecting the options?