Dell inspiron 15 i7559 aptio 5 unlock

My laptop has dedicated Nvidia GTX 960m , 16 GB RAM, 1 TB HDD , i want to disable Nvidia in bios and use integrated graphics. please unlock all options in my bios.

here is the bios https://drive.google.com/open?id=1iKKIDq...AxO0d9BdRU

only Main block is backed up in that file