Hello,

My Nav with MK4 was working perfectly until this afternoon,
I started engine but there was no BMW booting logo and screen was blank.
once I turn on the radio, it starts display text, but if I click GPS-Navigation menu, it goes back to blank.
to bring back the text, I need to press MENU button.
I removed map disc and click GPS-Navigation menu, it keep says "Please wait...." or something similar.
what's wrong with my nav system?
btw, I have newest software which is V31.

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