How to uninstall old graphics card and go back to integrated graphics?

grxog

Honorable
Feb 23, 2013
31
0
10,530
Okay, so I got a new comp a while ago. In my old computer, which is used by my family now, is an old graphics card that my friend wants to buy. I want to uninstall it, and make the computer to run off of the integrated graphics. How? When I plug VGA into the integrated graphics, it says that there is a pre-existing graphics card, and windows doesn't start. What do I do?

Thanks
-GrXoG