Question Third Monitor No Signal after Hardware Update

[Therix]

Recently underwent a hardware update. Swapped out motherboard, CPU and RAM:
Motherboard: Asrock H570
CPU: i7-11700KF
RAM: 32GB DDR4 RAM

I have three monitors connecting to a Radeon 6600. It has two HDMI and two DisplayPort ports on it. I have two monitors in the HDMI ports and one in a DisplayPort, which is a DVI-D cable with a DisplayPort adapter. Prior to the update I had no issue with these and all worked perfectly well.

While the hardware update fixed a problem, it now doesn't detect the DisplayPort monitor anywhere. The GPU was not changed in this update. It doesn't appear in the display settings, it doesn't respond to the Extend display trick, and doesn't appear in the device manager. The monitor itself recognises being plugged in and the power icon goes blue for a few seconds before saying there's no signal and going back to amber power saving.

 

[Fix_that_Glitch]

What happens if you unplug one of the hdmi ports? Does it now recognize the display port or no? And what model H570?

 

[Therix]

What happens if you unplug one of the hdmi ports? Does it now recognize the display port or no? And what model H570?

Ah, had a brainfart there. I swapped to the MSI B560M-A Pro (MS-7D20) made by Micro-Star.

As for the HDMI, no, even with both HDMI unplugged it doesn't recognise the DisplayPort.