displayPort monitors not working... kind of.
 

I have HP Zbook and a dell D6000 dock with three monitors. if I use the USBC connection only the HDMI monitor will be the detected, and the DisplayPort monitors will not. If I use the USB 3.0 adapter the DisplayPort monitors will work but not the HDMI. When I hook another laptop (Ubuntu OS) They all three work as expected. my driver and firmware is updated to current version. I haven't used this machine for a few months, but when I did it worked correctly. If anyone can help me fix this it's much appreciated.