Have you tried just installing the driver and not the full Catalyst suite? If not, you manually select the driver from the AMD folder (see below).
Click on the “Start” button, type “device manager” in the search field and click “device manager” from the search results
Expand “Display Adapters”, right-click on the AMD Radeon™ entry and then select “Update Driver Software"
Select the “Browse my computer for driver software” option.
Click “Browse” and navigate to C:\AMD\Support\[Catalyst™ version]\ and click “OK”. Note: This folder is usually extracted by default to C:\AMD\Support in the initial running of the AMD Catalyst™ software suite
Click on “Next” to install the driver software and restart the computer after...