Hey I got to work with my system! All I did was switch to an HDMI cable, even though Display Port is HDCP capable, but wasn't working for some reason. Switched my display settings so that the picture only showed on the 4K monitor (was originally set up for dual displays) and it worked. I guess if I choose "extend these displays" for two monitors in the settings, it won't work. I have to use ONLY the 4K display. I'm 100% positive that I have tried this before when I was troubleshooting a while back and it didn't work then, but it works now. Only Netflix though. YouTube has always had 4k for me. Vudu still does not work, but according to their 4k device list..it should work on Windows 10, so I'm still in the dark on that one. Amazon Prime Video does not support 4k playback on Windows 10 either.