Hello, armavir and thank you for reaching out.
Also, sorry for the slow reply.
May I know whether restarting will fix the black screen problem?
Regarding HDR, is your graphics card driver installed from the ASUS support page? What version is it? If not, kindly remove the driver and reinstall the version from the official website.
Meanwhile, what versions of the MyASUS and ASUS System Control Interface drivers do you currently have installed?