After doing a clean install of the drivers and finally finding the crossfire option (Radeon Settings->Preferences->Radeon Additional Settings), then it loads the old radeon UI where I can go Gaming->AMD Crossfire->Enable AMD Crossfire. The very second I hit apply on that both monitors turn of and my PC freezes with a constant disk activity light. Reset switch doesn't work and I have to power off/on. Does anyone else have this problem? I'm running Windows 10 64bit with two 7950's and the beta 15.11 (AMD-Catalyst-15.11.1Beta-64Bit-Win10-Win8.1-Win7-Nov14) didn't have this issue.
For now I'm probably going to uninstall and reinstall the old ones, but anyone else know anything; had the same problem?