I came across to this forum thread sometime ago when i was looking for a fix for the problem where my 2nd GPU is showing disabled in CCC.
So here i am now writing about my similiar problem. Look like there's others too with this same problem.
I'm now going to list my computers info below this line.
2x Sapphire AMD Radeon HD7970 Vapor-X GHz Edition (6GB GDDR5)
AMD Catalyst Driver Version, and Driver History
14.4, tryed with also 14.7 beta
Win 7 64 bit
Missing crossfire option, "disabled" adapter
Motherboard or System Make & Model
MSI Big Bang-XPower II
Display Device(s) and Connection(s) Used
Asus VE247, DVI
Intel Core i7-3930K
Motherboard BIOS Version
V1.5 / 20121016 (UEFI BIOS) and now also with the latest update V2.7 / 20140212
System Memory Type & Amount
4 x Kingston HyperX 2x4GB DDR3 (total of 32GB)
SSD boot drive
I have also sent a report to AMD about this problem with all the same info i posted above, so hopefully it helps them to pin point the problem and fix it.
It's been now quite sometime when i last was able to use Crossfire on my computer. Some older drivers worked just fine, but i don't remember now which ones they were. Anyhoo... that's all now i wanted to write here.
Hopefully in their next driver update this problem has been fixed.
I just now tryed Catalyst 14.7 beta drivers, but it doesn't help. 2nd GPU is still showing as disabled.
I also added second crossfire video link cable to my graphic cards since it says to do so in the motherboard manual. Seems they had forgotten to place it when i bought this computer. But that didn't help neither.
More testing... today i updated BIOS in my motherboard to the latest version (V2.7), but still getting "Disabled" for the 2nd GPU. Also updated mb drivers and etc.
07:04 AM by