How do I Bios Unlock My MSI GT72VR 6RE Dominator Pro Tobii.

Hi So I need some help with unlocking my bios so I can use Intel Integrated Graphics. because I have heard without a bios unlock aka modding the bios it wont work. Basically I am on stock bios but when I enable the internal graphics it shows a black screen after reboot from bios nothing else. Plus In The bios under Graphics configuration it only shows Primary Display, which is on auto, then Internal Graphics which is disabled, then finally Skip scanning of external GFX card.
I have never modded my bios before and do not want to risk bricking my system.
Thank you for your time. My current Bios Version: E1785IMS.119