nav or audio

When I started my car this morning after being parked for a couple of hours the Nav/Audio displayed only the Hyundai splash screen. AM/FM and XM played correctly, but the screen display did not change. USB did not work, and the nav screen did not display when I pressed the map button. I...

This past weekend we took a 250 mile trip, going everything was great, on the way back the nav and audio stopped working and the nav screen was flashing the blue Hyundai logo on and off on my 10 4.6 with 27k miles. This morning I was going to take her to the dealer, when I cranked her up...