Usually it installs with the driver package, unless you uncheck it.
Have a look in device manager, see if it has an error/or disabled.
I figured it would've too, but I've tried reinstalling the driver after a clean uninstall. However, no luck, issue persisted. Would it show up as being separate from the Display Driver, ReLive, and Radeon Settings? I recall there being 4 different options on my first try of installing AMD's Driver, but only 3 after the follow subsequent tries. I can't say that's the case with absolute confidence though; I just did an initial skim and it was all items I wanted installed. I encountered issues on the first install due to remnants of my Nvidia Drivers remaining that I had thought I'd have removed completely. I also used DDU to wipe AMD's remnant files from the initial install fail too.
As for the driver, Windows doesn't see an error, if you're referring to the Display Driver. As for the Audio Driver, I'm not sure where it's supposed to be installed, but I couldn't find it under Display Adapters and Sound, Video, and Game Controllers.