Since updating to Windows 8.1 I have the same problem and the same error message as Originz:
"AMD Catalyst Control Center cannot be started.
There are currently no settings that can be configured using AMD
Catalyst Control Center."
I have installed the latest drivers, even the latest beta and nothing has worked, the problem persists. I tried reinstalling Microsoft's '.Net', reinstalled the graphics drivers and the Intel HD 4000 drivers (it's control panel also won't open).
Before I installed the latest drivers I could run 'Warframe' in full graphics at a very decent framerate (it was perfect). Since the update it is very jerky and lags.
I used to be able to right-click the desktop and configure the switchable graphics settings from there but that no longer works, I just get the above error message.
I guess it's a problem with Win 8.1 but I'm hoping AMD have a solution because it is driving me mad now.
I have a HP Envy M6 running Win 8.1 64bit with a quad core i5 3230m @ 2.6GHz, Intel HD 4000 and Radeon 7670m. It also has 6GB RAM.
I miss my 7670m.