royal muralIf this is a laptop:
Laptop displays are not connected to their dedicated GPUs, instead using the integrated GPU on the CPU. If your laptop model has a MUX switch, you can use it to bypass the iGPU. If it does not, you'll have to make the adjustments you want in your iGPU's control panel instead ("Intel Graphics Command Center" / "AMD Software: Adrenalin Edition").
If this is a desktop PC:
Make sure all of your monitors are connected to the ports of your graphics card, not to the motherboard. If you are unsure or don't know what this means, take a picture of the back of your PC and send it into this channel.
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