How do I disable on board graphics in the BIOS ?

[Buckzz]

Hi I am wanting to disable my on board graphics I have got on to the BIOS but can't figure out exactly what I need to disable the BIOS on my PC is - E7681IMS V1. 18 Click Bios , Thanks to anyone that can help.

 

[noidea_77]

Install another graphics card and bios will disable the onboard automatically