My Inspiron 3847 only has 3 options in the Advanced section of my UEFI BIOS | DELL Technologies
Restored Dell Inspiron 3847-T Mini Tower Desktop PC with Intel Core i3-4130 3.4GHz Processor, 4GB Memory, 500GB Hard Drive, and Win 10 Pro (64-bit) (Monitor Not Included) (Refurbished) - Walmart.com