Ok , I did . Now I get , Catalyst Control Center: Host application has stopped working. A problem caused the program to stop working correctly. Window will close the progam and notify you if a solution is available.
you just have to re-install it,
use Ccleaner to uninstall it
install the drivers againhttp://support.amd.com/us/gpudownl
this will auto detect the most appropriate driver for your hardware.