NB Options - wrong video port

[LH790]

In the UEFI/BIOS of my "Prime X670E-PRO WiFi [CSM]" motherboard, there is an option under 'Advanced' titled "NB Options". First, I don't understand what the acronym "NB" stands for. Second, it seems as if one can choose which video port (motherboard or PCIe video card) the BIOS logo and BIOS/UEFI screen content come out of.

Since I want the BIOS and its logo appear on the PCIe video card (an ASUS RTX-4080) and use the motherboard's HDMI connector as a backup, if no graphics card is present, I set the two settings there to "Primary Video Device: PCIe Device" and "Integrated Graphics: Auto". I thought this would then work as expected, but the BIOS only comes out of the motherboard's HDMI socket. The BIOS version is '1636', which seems to be the latest.

If I change the "Integrated Graphics" to "Disabled" I fear there won't be any recovery method other than clearing the CMOS?

[LH790]

In the meantime I changed the "Integrated Grahics" option to "Disabled". I did this in the (false) hope that the UEFI/BIOS would then choose the graphics card (PCIe), but from then on I got no more BIOS screen at all and had to erase the CMOS memory (via the pushbutton). (The manual does not describe how to do this, that you need to power off the system and then press the button for 5-10 secs, I found this via a web search in an ASUS video, why is it not explained in the manual?).

[Jiaszzz_ASUS]

Hello, @LH790 

According to the instructions in the user manual, the setting for the IGPU in the CPU is located under the "NB configuration" option.

I'm not entirely sure about the specific settings you currently need, but please note that after clearing the CMOS, the BIOS settings will be restored to their default values.
Could you please confirm if your display is currently functioning correctly?
If it's not, could you provide me with details about the graphics card you have connected?
This includes information about whether you're using any adapters, which slot on the motherboard the GPU is connected to, how many monitors are currently connected, and what your display setup requirements are.

Thank you.

[LH790]

Hello, thank you for replying! The PDF for my motherboard does not have a section 6.13, the file that I downloaded from the ASUS web site is "E20194_PRIME_X670E_PRO_WIFI_UM_WEB.pdf" and the motherboard is a "PRIME X670E-PRO WIFI [ CSM ]", Part No. 90MB1BL0-M0UAYC. Anyway, I seem to have interpreted this part correctly but it does not seem to work like I expected.

When I built the system, I first had no GPU installed and plugged the single monitor (a "DELL UltraSharp UP3216Q", which can do 3840x2160/60Hz) via a DP cable into the motherboard's DP socket, no problem.

Later I installed the ASUS RTX-4080 ("TUF-RTX4080-O16G-GAMING, Part No. 90YV0IB0-M0NA00) into the usual PCIEX16_1 slot (the one that has the special release mechanism with the button). The operating system comes out of that GPU (plugged in via HDMI cable into the HDMI socket at the bottom left under the DP sockets) into the same monitor (without the DP cable plugged into the motherboard in parallel). But the BIOS does not come out of this port, the BIOS only comes out of the motherboard's DP socket (and maybe the motherboard's HDMI socket, which I have not tried yet). As you can see in my screenshot in my 2nd post, I have the primary video device set to "PCIE Video" and the other two selections to "Auto".

My expectation is, and please tell me if I am wrong, that with these settings, if there is no monitor plugged into the motherboard, that the BIOS comes out on the GPU.

I only have this one monitor connected to the RTX-4080 via HDMI and there is no adapter involved.

Thank you for your help. All I want is that I could go into the BIOS on bootup without having to run a cable from the motherboard to the monitor.

[LH790]

I have some news, when I plug the monitor into a DP socket (with a different cable of course) instead of into the HDMI port on the RTX-4080, then I see the BIOS Logo on startup. So it works with DP, but not with HDMI.