Question Display Appears in Windows but Can't Enable It

[sassums]

So I recently bought a smaller display from FormulaMod to install in the case to display system information (temps, loads, etc) just for the fun of it.

It's Mini HDMI to DisplayPort.

When I fired up the computer for the first time Windows saw the display and extended itself onto it which caused a different display to become "not active".

I finagled a bit and got my 3 main screens working but now this little display screen will not display anything. It has power, its plugged into the GPU and its plugged into the MB.

Windows sees the display via Display Settings but its set to "Disconnect this Display" and anytime i try to extend Windows onto it, nothing happens and the computer automatically reverts to the original setting.

I have dual 27" screens from Corsair mounted above the 49" display from Samsung.

Any ideas?

System Information:

• Motherboard​

  Asus ROG Maximus Z690 Hero

• Processor​

  Intel 12th Gen i9-12900k

• Memory​

  64GB DDR5 5600mhz

• Video Card # 1​

  ASUS ROG STRIX 4090

• Hard Drive # 1​

  2TB WD M.2

• Hard Drive # 2​

  4TB WD M.2

• Power Supply​

  Corsair HX1500i

• Case​

  CORSAIR iCUE 7000X RGB

• Operating System​

  Windows 11

 

[helpstar]

does it still work while no other monitor is plugged in?

update the bios of the motherboard

update the intel management engine driver and intel gpu/cpu driver +chipset driver

try different cable/adapter to the display

 

[Glenwing]

If the 49" display is something like 5120×1440 at 240 Hz then it requires DSC to run, which also means it counts as 2 monitors toward your maximum limit. GeForce supports only up to 4 monitors, so you're maxed out already.

https://nvidia.custhelp.com/app/answers/detail/a_id/5338/kw/DSC

 

[sassums]

If the 49" display is something like 5120×1440 at 240 Hz then it requires DSC to run, which also means it counts as 2 monitors toward your maximum limit. GeForce supports only up to 4 monitors, so you're maxed out already.

https://nvidia.custhelp.com/app/answers/detail/a_id/5338/kw/DSC

Well, that explains that.

Why have 5 ports on the GPU and only support up to 4 screens -_-

 

[sassums]

That begs another question though - am i able to use the onboard video from the motherboard to run that single screen or will that create issues of its own?