New XDJ-XZ not working

Hi, 

i got my brand new xdj-xz yesterday and its nor working correctly from the beginning on.

The display on the jogwheels is showing nothing, also nothing on start. Also the play/cue button is doing nothing. And the biggest issue is, that the sound is crushing, like a bad audio driver.

I installed everything new, the audio driver, firmware etc. Still have the same problems?

How can that be on such an expensive controller and what can i do to fix it?