Hey beelzebozo. oh man thank you so much! That worked. my mac os was able to start. I went out and picked up a hard drive and windows 10. As your video suggested. I installed windows 10, i also installed the thunderboltex 3 drivers that came with the supplied CD. i restarted the computer and booted into sierra after make what ever changes i could in the bios. keep in mind the 3504 bios firm ware is different from your video. The Apollo Twin is still not being reconized by mac OS so im not sure if the thunderbolt card is even activated. Now i have a new issue. My GTX 1060 card is no longer being reconized. It worked fine before the bios update but now it does not show up in the OS. I am attaching screen shots to show you what i have going on. Any futher assistance would be greatly appreciated!.