NAV SCREEN FROZEN WHITE

[2007 is350]

Hey guys, I drive a 2007 Lexus IS350 with x-package. 

My navigation screen suddenly went completely white. Just plain blank white. Everything still works though. The radio and everything functions. And even when you touch the screen itself you hear the feedback and noise that it's working. But the screen itself stays white and I can't see anything.

Anyone know what the problem may be?