The process of downloading the AMD Catalyst 11.4 Early Preview driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the AMD Catalyst 11.4 Early Preview driver from the primary server - this is the manufacturer’s AMD official website). If the download still fails to run, check whether your anti-virus software is not blocking the connection to the manufacturer server of the AMD Catalyst 11.4 Early Preview diver.