I tried to overclock my good old 7850 so I could play The Division, and was doing fine until I decided to overclock it near the limit (in the Crimson OC profile thing). Sadly, my computer freeze here and then after a while, and there is no way to revert it back to working condition. In fact, I can't even see the Memory clock slider anymore.
I tried uninstalling drivers (using AMD cleanup utility) and then installing newest drivers: didn't work. It seems it saved 1450 mhz as my default clock or something instead of 1200 mhz.
Then I tried uninstalling again, and again, and again, with or without MSI Afterburner. I can control everything in MSI Afterburner, except the Memory clock, which is stuck at 1450.
Still not working.
I know a fix is the work: In the meantime, anyone has a working fix? Should I go back to a version with CCC?
Edit: Reverting back to 15.11.1 seems to have done the trick. No more Crimson for me it seems.
Thanks for the feedback and glad to see you resolved the issue by using Catalyst 15.11.1 Beta. We are aware of this bug and are looking to resolve it in a future driver update.