Well your going to have to search again for which graphics card you have. There are two different drivers available, depending on your cards version.
If is between HD 7700 and 7900...then these are your divers:
If it is between HD 7000 and HD 7600....these are your drivers:
To install new AMD drivers for your desktop computer:
1. In the computer control panel ..uninstall a program > choose AMD Install Manager and express uninstall all AMD software including the install manager. Everything.
3. Install the new drivers