How to disable on board graphics?

[AllRiggedUp]

I just got my new HD 7850 video card but I can't get it to work. I think I need to disable the on board graphics first but I have no idea how. Can someone help?

 

[zink1701]

Usualy its done automatic when you plug in the PCI-e card but if not you need to go into bios and set it manually. Boot the PC an enter bios (depending on system it could be the DELETE or the F2 key) now depending on what bios you are running there will be an option in there saying onboard VGA, disable this or select primary graphics to PCI-e. Hope that helps. Also sounds daft but make sure you plug the monitor into the back of the new card and not the onboard VGA/HDMI/DVI port. Also make sure you power the card with the PCI-e power leads or the card wont work