2012 audi S5 - MMI prompts but wont stay on
 

having issues with this MMI, if i hit the power button or any of the console buttons for the screen, it will light up and show the startign window "MMI" etc but then it just goes black.

car was in a front collision, other than the headlights and fogs, and deployed airbags not connected the car is plugged up and running.

any thought.