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In short, remove the VGA port, and plug in the display to the Graphics Card. Having both plugged in will result in only splash screen on VGA and nothing past that on any other display-capable device installed to the motherboard. EDIT 7/2/21: Having both displays SOMETIMES work.

This motherboard in particular DOES NOT support display auto-switching, meaning if it fails to output proper display through sequential hardware initialization (during POST, detecting display devices and cable to monitor), then it will just never display anything past the splash screen at all; if you missed it, or did this incorrectly, you will need to press+hold the power button for 5 seconds to power off the system and start over by powering the system back on so it can go through POST again.

1. Hit 'enter' for the 'Yes' to 'Save configuration and reset'
2. IMMEDIATELY unplug VGA cable and plug in the graphics card display
3. System will reboot twice (results may vary), 1 time after ~1 minute, and then again ~20 seconds after the 1st reboot, then it will display through PCI-e device
4. Keep striking the 'del' key to get to BIOS menu

From the VGA display if you have 'PCIe Devices' set as primary video

If you plug in VGA cable, AND the 'Primary Video' setting in BIOS is set to use 'PCIe Device', then you will be met with this 'DXE-Setup Input Wait' screen with 'AB' code on the bottom-right. This is consistent, so no-display with any other code might indiciate an issue with BIOS or motherboard.

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