Rocky Bennett :
bgunner :
Rocky Bennett :
When I posted I assumed that the OP does not have a separate GPU. Now I wonder.
IGD= Integrated Graphics Device. This is only present when the CPU or (older) Motherboard has a Integrated GPU.
Exactly, that is why I never thought that the OP had an add on GPU.
I'll take you through my deductive reasoning on how I came to teh conclusion that there are more than 1 GPU in the machine:
1. IGD is present
2. Changed setting to IGD.
3. Lost display. This means that there is a dedicated GPU installed.
So the simple fix is to swap the cable then swap it back after the change. While your suggestion will work by setting ALL BIOS settings to default this is not a sure fire immediate fix if there is a dedicated GPU because there are times at default the system will only have a display signal from the IGD in default configuration. This could still force the need to change the cable.
This is just my way of figuring out the issue.