Windows 10: Can't enable hdr

Hi, I can't seem to enable hdr on windows 10.
The option to enable should be under the 'windows hd color' settings of the display settings page however the sliders are not present to enable hdr and all hdr capabilities are set as 'No'.

I had the same problem last time I tried using the computer connected to the TV and after an hour of unsuccessfully playing with settings I gave up only for the hdr sliders to magically appear and be operational after a reboot.

Of course the TV supports many forms of hdr, I've tried several cables all with high speed hdmi, the computer and GPU are capable ( gtx 2070) and it's a completely fresh windows 10 installation fully up to date with the latest drivers.

So I know for a fact hdr works with this computer and TV as it's worked before but I can't find out the reason why the sliders are not present (maybe windows is not detecting hdr capable TV) or the process I went through last time that allowed functionality to return. If anyone can help that would be nice.

:)

 

HDR won't enable!

Thanks for your suggestion. I lowered the refresh rate to 30 HZ and still could not toggle the HDR switch to on position.

I also checked the play back with powerdvd17. My projector information recognizes 3840 x 2160 p 60 Hz with HDR 10 BT 2020 when I play a 4K HDR source file

Thanks

 

HDR won't enable!

Same issue but its new. I dont have hdr on in win10 but games will turn it on themselves. Forza 7 used to do that but now it wont enable HDR

 

Cannot Enable HDR

The HDR option does not appear in 'Display' settings.

I am using:

Intel UHD 630 Integrated Graphics

Cardas HDMI cable

LG 27UK650 Monitor

The LG monitor's HDR works with a Playstation 4 Pro and Cardas HDMI cable.

The LG monitor has no manual HDR setting. It only enters HDR mode when it receives proper signal, first.

Windows 10 only offers HDR setting when it receives proper signal from the display, first.

How can HDR be force-enabled on Windows 10?