usb 3.0 error on x99-a / usb 3.1

hi folks,

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I'm trying to get onboard USB 3.0 for my ASUS X99-A / USB 3.1. I've tried a bunch of different things but still can't get it working properly. My wall-powered USB hard drive doesn't show up. I've attached my EFI folder for reference. Can someone please help? Thanks.

https://drive.google.com/open?id=1Q82z6xtM7I7-bB07mje7rYxehx-6jBtB

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i7-6800k

GTX 1060

ASUS X99-A / USB 3.1