This message was posted on behalf of Intel Corporation
I understand that you are not being able to turn on the HDR support with your system.
Regarding this, I would like to mention that we have an article that can be followed explaining what needs to be taken into consideration and the steps that need to be followed in order to be able to turn on HDR. Please refer to the link below:
Make sure that you have followed all of the steps mentioned in that article so that there is no problem with the HDR.
I hope this helps.