what happens if you don't have a graphics card code example

Example: can a computer run without a graphics card

I know this is not a coding problem,
but I disabled my integrated graphics card.
I was concerned that my monitor output would simply shut off.
I have a dedicated GPU, and I assume that is what took up the load.
If you do not have a second GPU after disabling one, I do not know what
your computer will output. Hope that helps. :)