This might be a bit of a niche question, but it puzzled me on a recent trip. I wanted to turn the system off completely, with nothing on the screen and no audio. I tried the on/off button at top right, but then you get "AUDIO POWER OFF" permanently displayed in huge letters (why ? I know it's off, there's no noise coming out, I don't need to be permanently reminded about it !). Best I've found is to ignore the start-up splash screen so it goes out eventually and then turn the volume down. Radio's still working, you just can't hear it. You still get interrupted by traffic announcements so you then have to turn them down as well. All a bit of a faff, and you have to explain the screen messages to uninitiated passengers. So, has anyone discovered how to have no unnecessary visual or audio distraction from this thing ?