hdmi 2.0b

I recently switched from a 75hz 1080p monitor to 165hz 1080p monitor .. But my GPU only has 2 ports Hdmi and DVI so I tried to connect with the HDMI which I got from the old monitor and i actually got the 165hz but it goes black screen randomly.. it used to happen with the 75hz monitor too just...

Hi all, I am trying to connect my TV to my pc via a fiber optic HDMI 2.0b cord. The tv is not showing up in my display settings, and there is a 'no signal' message on the TV. When I connect the two via a lower quality copper wire HDMI cable it works fine, and when I connect a different device...