The AMD device shouldn't interfere with your SoundMax device. If it doesn't work, then it means something happened with the driver or the application. My advice is to remove the software and the driver using Uninstall a Program in Control panel. After this procedure, reboot the PC and reinstall the driver package. It's the simplest and most convenient way to overcome this issue.
The driver for the device can be found on the manufacturer's website or on the website for your motherboard.