Can't Set Legacy Boot As Default H87N-WIFI Rev. 2

Hey guys. I've got a Gigabyte H87N-Wifi Rev. 2 m-ITX motherboard and I'm attempting to get it setup so that it boots from my SSD with a legacy operating system on it by default. I've tried messing with the settings turning everything related to UEFI off, but I can't get it to put my SSD Legacy boot at priority number one. It still says "UEFI OS" as boot priority one no matter what, and if I don't select a boot device at boot time it just sits with a black screen attempting to boot my legacy OS as UEFI.

So, if anybody has experience setting up a legacy OS from a similar Gigabyte BIOS it would be awesome if you guys could help me out.