Windows 10: Windows 10 HDR Option Suddenly Missing

I was using the HDR option on my LG 34GK950F for the past few days with no problem. I was playing games with it on earlier today and then left the house for a bit; when I came back this evening and went into my display settings to turn it back on, the setting was gone. All that's there now is the "Windows HD Color settings" button, and when I go there and select the LG monitor it says it is suddenly not capable of doing HDR videos, games, or apps. How is this possible when I've literally been using HDR these past couple of days including earlier today??

:)

 

HDR Washed out on Windows 10

That was suggested in post number 3 I thought?

 

Windows 10 on Sony XD800 4k HDR are missing setting HDR on/off

Hello Devlin,

The issue start after buy new TV (Sony XD800) and update to "creaters update" on "win 10" which support hdr.

If stream 4k hdr content from from WMP to TV, all work is well.

Now use Win 10 - 10.0.16299 build 16299.

For troubleshooting I change resolution\color depth\video driver. On TV setup "enchanced mode" on hdmi.

 

Windows 10 on Sony XD800 4k HDR are missing setting HDR on/off

Hello Lex,

The missing HDR settings might be due to a driver incompatibility. It would be great if you can tell us more about your concern. Please verify the following information:

• When did the issue start?
• Did you notice any system setting changes prior to the issue?
• Are you getting any error messages?
• What troubleshooting steps have you tried so far?
• Have you installed the latest updates for Windows 10?
• What is the Version and OS Build of your Windows 10 PC?

To verify the Version and OS Build of your Windows 10 PC, click the Start button, type About
your PC, and then press Enter.