Hy, sorry if you dont understand something what i ask...

I have problem with my navigation, i have navigate 16:9 and i lose option navigation on my screen(but i still have mobile phone, TV, CD...)
My screen is look different before i have before different resolution, more colors(now i have Italian, German, English, Finland and some languages, before i have just German, and English)
My navigate computer now is turned of always, red circle, but yellow is on,(all that's happened when my battery is empty, then i start my car with help of other car) whats happening with my navigate, is it dead because i don't have option on screen for navigation?