You could try the little reset hole on the bottom of the laptop.
I had some weird issues with my z16 none of the usb c ports were working and neither was the usb c dock.
I think there must have been some static buildup or something that triggered a surge protection or something but for me using the reset pin hole did the trick
Just have a read up on doing that for your model
It’s doesn’t wipe the laptop. Just resets the power circuit or something
Noice!