I have successfully installed my card and also the catalyst 9.11 . My problem is the CCC does not work.Whenever I click nothing happens(only the memory shoots to 70% (a/c to task manager) and then comes down). I have .net 3.5 sp2 although .net2 is required but I have tried running the CCC in .net(ver 2,3,3.5,3.5sp1,3.5sp2). Also theirs a peculiar problem none of 3DMark vers. is working. All just stops responding after the first message(The initial screen).
Have you completely removed your last card's driver ?
1_Download and install Driver sweeper from here: http://www.guru3d.com/category/driversweeper/
2_Uninstall your current driver from add/remove programs and restart
3_Boot to safe mode and open driver sweeper and click on "ATI" and then click on Clean
4_Reboot normally to windows and install the driver again,(You may want to install Catalyst 9.12 since its newer),after the installation restart and its done.
Check if it helps