If there's no vibration, then the vibration setting is turned off.
If there's no sound could you have accidently run the volume all the way down?
If you need more help please register.
Then go to the 950XL forum for far quicker, knowledgeable help:
http://forums.windowscentral.com/microsoft-lumia-950-xl/
Peace. Alan
Galaxy S7Edge [MM6.0.1] Full Dresser
Lumia ICON [Win10M 14977.1000] Sportster
Even when I lose, I win.