UD-3900-EU, WIN10 Everything working, but not the screen...

Dear people, first sorry for my maybe not so good English coused by mostely speaking German. :slight_smile:
My question is, if you can halp me, running my new notebook on the screen. Keyboard, Internet is all working, but screen not. Old notebook original win8 now 10 is all right. New one, bought as win 10 3 monts ago named problem. Docking Station Model: UD-3900-EU. Ideas, or need more Informations?
Thanks a lot! Greetings! :slight_smile: Dominic