So I got this unit with the car I bought. I was pressing a bunch of buttons and discovered the screen dropping lower than it normally does, and it revealed the Navi DVD slot. I ejected the disc and then put a regular DVD into it, thinking it was actually a "DVD player" . It didn't work so I put the Navi disc back in (it is a DVD-R DL burnt copy that was in the car)...

 

Now it doesn't want to read it, it tries, then reloads, tries again, etc... for forever.

 

What can I do? I put the DVD into my computer and it looks like theres 8 gigs of files on it so I assume it's not the DVD. Is there something in the configuration to initiate the Navi DVD again?

 

Any help would be much appreciated.