You can try reinstalling and rebooting and see if the driver gets installed.
The problem may be related to uninstalling drivers which has created an unstable situation.
You may have to reinstall the amd chipset driver, and reboot, graphics driver and reboot, audio driver and reboot and then the USB Filter driver and USB 3.0 driver (if the chipset driver fails to install the usb 3.0 drivers).
I would use the 3rd chipset driver on the list (49.7 MB).
http://support.amd.com/en-us/download/chipset?os=Windows 7 - 64