Mainboard ROG Maximus Z790 Hero Graphics Card removed error code (Black screens, Fans on full speed)

[Zaxoro]

Hi, 

I was looking for almost a year on NVidia side for a solution on my problem and it seems, i found it on the UEFI. 
Problems: 

• Both Displays turn black and show Display port no signal. (Reset button necessary)
• Both Displays turn black and show "Display Port no signal with all fans on max speed. (Reset button necessary)
• Game crashes with DirectX error: Graphics Card has been removed. (no restart needed)

I tried everything by reseting my PC 2 times with only bare Win11 instalation, bare NVidia drivers (without the app) and so on. Nothing helped. Black screens came completely random. Both Displays (PG279QM & PG32UCDM) got HDR and i tried turning them off too. 

A week ago i read about unstable USB-C/Thunderbolt ports and i turned them off. Since then i got a steady system.

Now i would like to know, why and how this could affects my PC stability? There is nothing connected to it? 
Driver´s are up-to-date and reinstalled. I am missing the last UEFI update from 3 month ago but i am still observing my PC´s behaviour. 

I still got warranty on the mainboard but i expect it to be a driver issue. 
Any info is much obliged.

Best regards
Zax

[Ewesser72]

I'm hypothesizing that if you were to re-enable the USB-C/Thunderbolt ports within the BIOS settings and subsequently execute the MSInfo32.exe utility, specifically examining the "Hardware resources" section under the "Conflicts/Sharing" tab, you would likely find that there are resource conflicts. It seems these ports were sharing resources, and when the USB-C functionality was deactivated, it inadvertently led to the display port experiencing lock-up issues. I'm pleased that you've identified a resolution to this problem. To provide you with complete assurance, I would recommend conducting this test with the BIOS configured with both the USB-C/Thunderbolt ports in both the enabled and disabled states. This approach should help to confirm the root cause and offer you complete peace of mind, knowing that the system is stable after implementing these modifications.

[johnwick5656]

Thanks for sharing your detailed experience, this is really useful. Random black screens with “GPU removed” errors can be incredibly frustrating, and it’s interesting that disabling the USB-C/Thunderbolt ports improved stability. Even if nothing is connected, those controllers can still introduce conflicts at the firmware or power management level, so your observation makes sense. Hopefully the next UEFI update addresses it more directly, but it’s good to know this workaround in the meantime.

[Zaxoro]

Hi, i was in contact with the support shortly after i posted on this board and they told me that this is an error and needs to be checked/repaired.
As i had very good experience with ASUS ROG, i never imagined that something like this could happen...

My Mainboard,which costs half a fortune, is since 4th of september away and until today they did nothing. After a call to the service center it seems that some pins fromthe CPU socket were destroyed even though i used the CPU protector for transport... now they charge me extra and still have not checked the actual problem.
They tried to send me an e-mail on 10th of September to an address which does not exists,even though the registration was done and received on my end. I checked every day on support-page if any changes happened. If i hadn´t called them on 16th , i would have waited until christmas. 

I am extremely unpleased with that service and got almost everything from ASUS ROG. That can´t be the service i am paying extra for the components.