Asrock Z690 RS Pro iGPU doesn't work

Could finally fix it. I had to disable Above 4G Decoding

Missing menu and use of IGPU and Card simultaneously:
The menus item does not appear in the bios if you have CSM selected for example an MBR style hard drive. If you have that, you cannot AFAIK use IGPU and Nvidia card together as the option to select the card is simply not present in the bios. Unfortunately, this does not seem to be documented.
To be clear: if you enable CSM, the menu item for graphics priority will simply vanish.
Workarounds: disable the CSM, and, if necessary to boot you disk convert the MBR partition to GPT with the inclusion of the boot material.
Once you can boot without CSM, you may have to make the changes in succession to the bios, but, eventually, I was able to get it to work. I did, however, have to convert my hard drive. Aomei partition manager will do it without losing your data, but it isn't cheap.

I have this combination and I get a black screen when I enable the IGPU. There is no "primary adapter" in the advanced page of the bios, is it somewhere else?

Also Intel Sound does`nt found in System. The Bios 2.10 is buggy for Intel iGPU!

I have a problem with multi-monitor, when I set it enabled, my windows 10 system will not boot. The disk led doesn't even flash at all.

I have the z690 extreme wifi. bios 2.07

I have a geforce 210 nvidia gpu. If I plug in the hdmi to it then it works, and I can plug in another monitor to the vga.

If I pull out the gpu card, then no boot devices show up. However, the onboard hdmi does show up at boot and I can set the bios (this is w/o enabling multi-monitor mode). Haven't tried every combo though.