How do I reset the radio on my Audi A5?

I recently purchased a used Audi A5 and the radio is not functioning properly. It doesn't turn on and I can't even change the station. How can I reset the radio to fix this issue?

To reset the radio on your Audi A5, first turn the ignition off and remove the key from the ignition. Then, press and hold down the power button on the radio for 10 seconds. This should reset the radio and allow it to function properly.