assumign you have an intel gpu as well, plug the dvi/hdmi cable to the mobo slot first. if it works on the mobo slot, check your bios settings to see if the computer can sense the gpu
When you say "intel gpu", do you mean "cpu"? I'm going to assume you do, for now.
It does work on the mobo slot.
I'm currently checking my Bios settings on UEFI Asrock bios. On the 'main page' It just has CPU information, and RAM information.
There is nothing about the graphics card. However, when I go over to the "OC tweaker" tab, it says "IGPU +0.0000V)
I assume that means Integrated grahpics, from the CPU...
So no, I can't find any reference to the graphics card on the BIOS..what does that mean?