Please try these steps I used for my board:
Ok, got the grey screen issue fixed unless PC comes out of standby (then need to replug HDMI cable). A few notes with my ASROCK Z270 Fatal1ty Gaming ITX board:
1. Updated to the beta bios (copy file to USB, then update from BIOS).
2. Set PRIMARY graphics to onboard (although I didn't have a card in the PCI-Express slot, go figure!?!)
2.1. Remove all other graphics cards.
3. Set graphics mode to single in bios.
4. Set SGX to "Software" or "Enabled" in bios for Netflix 4k to work. Unfortunately, the Cyberlink UHD adviser tool wants manually enabled. Both these options still give me a periodic grey screen which requires unplugging the plugging the cable in. Using enabled now and it seems fine unless PC comes out of standby and I try Netflix app.
5. Install windows 10 creator preview version (this is what I'm using). Supposedly this version supports HDR, but I'm not sure if this is necessary or not... Instlall latest intel 630 graphics driver and the MEISetup.exe from Asrock's website under downloads for your board.
6. After changing any of the previous bios settings, ALWAYS reinstall the latest intel graphics driver (took me a long time to realize this).
7. Also rerun MEISetup.exe from asrock's website if you change bios video or SGX settings and still get an error in Netflix.
If this doesn't work, verify your motherboard has the mediatek chip for handling HDCP2.2. I am assuming it does, but you didn't paste the advisor tool results.
Now, please try all this and let us know if your drive works
A PM to where you found the trial PowerDVD 17 software and version number would also be greatly appreciated
EDIT: if HDCP 2.2 doesn't work, try the asrock hdcp tool to reprogram key (found under support page for your motherboard).
If it still doesn't work, run this tool and post a screenshot of the advisor results:
http://update.cyberlink.com/OEM/Pat...ltraHDBlu-rayAdvisor_1313_BD_CDT170123-01.exe
You can also try the Netflix app from the Windows Store. When playing a 4k video Control+Shift+Alt+D will show the resolution and bitrate in Netflix. I'd think if you get Netflix working in 4k (takes a minute to buffer and reach 4k), your drive is what is holding you back or you need the a different version of the PDVD 17 beta...