My monitors will not work as intended.

[Con6612]

I have 2 monitors.
The first one shows "Input Not Supported" when its the only screen on, as in when the 2nd screen isn't on, the screen turns off and shows the aforementioned message.

The second monitor works fine on its own. My first monitor works fine on its own when an Xbox One is connected, or any other device. My monitor just doesn't like it when my PC tries to only show it on the 1st monitor, even though through connecting from remote desktop app, it shows that it is 1920x1080 @ 60Hz, which is what is outputted to this monitor regardless of the second monitor being connected or not.

Don't waste your time asking, I have definitely updated every driver on this PC to its latest. I have tried rolling back drivers. I have tried every driver related solution. It has the same result.

Relevant specs:
GPU: Gigabyte R9 390 Windforce
Display 1: Acer K272HL monitor
Display 2: LG 42" display (I don't know nor can I find out the model)
both support 1080p@60Hz.
I am running Windows 10 Home.

 

[Max1s]

So the setup works fine when both monitors are on?

Have you tried playing with the system resolution settings, selecting "extend desktop to both monitors?"

 

[Con6612]

So the setup works fine when both monitors are on?

Have you tried playing with the system resolution settings, selecting "extend desktop to both monitors?"

Sorry for the age it took me to reply:
They only work when both are on and connected.
I can only extend or duplicate, if I choose only show monitor 1 or 2 they both don't work.