I am currently running a AMD 7990 card.
While running AMD 15.7 catalyst drivers i have no issues with crossfire but with 15.7.1 crossfire is completely missing, does not even show up in Catalyst Control Center.
I have tried everything, from doing a complete uninstall of the previous drivers with Display driver uninstaller, to removing the card from the PC and removing all traces of the software with no luck.
As soon as i install the previous version 15.7, it works perfectly fine.
In device manager both my GPUs' show up under Display adapters.
Thank you in advance.