[SOLVED] Windows won't allow 4k HDR @100Hz ?

[avizacty]

I recently bought a new 4k TV, but after some experimenting, Windows will not allow me to use it to its full potential. The TV is fitted with a 4k HDR10 display @100Hz.

The furthest settings I've been able to use via my computer, on the TV is 4k @60HZ with no HDR. The only way I'm able to turn on HDR is if I put the refresh rate down to 30Hz, but whenever it's any higher, the HDR button just instantly flashes off.
4k HDR at 30Hz is not what I'm going for so I am looking for solutions

I'm wondering if theres anything wrong on my computer end, because my Apple TV 4k can do 4k HDR with the same HDMI cable.

My computer specs are:
GTX 1070
i5 7600k @3,8Ghz
Asus Prime Z270-P Mobo
Corsair RM750X Power Supply

The TV specifications are in this link
https://www.sony.co.uk/electronics/...s-lcd-tvs-android-/kd-55x8505c/specifications

Help is appreciated thank you

 

[sizzling]

You need a gpu with HDMI 2.1 and that is limited to the latest NVidia 3000 and AMD 6000 cards. Your gpu will have HDMI 2.0 and that has a maximum of 4K 60Hz.