I called Gigabyte about the issue. After talking with two representatives, I was finally able to install BIOS version F10 (which for some reason failed when I did it alone a few days prior), which actually fixed the problem. Still not sure what (if anything) was done differently when I was on...
I recently purchased upgrades for my PC, including a new CPU, GPU, RAM, and motherboard. My specs are listed below.
Previous, working configuration:
Intel Core i7-6700k 4GHz
Cooler Master Hyper 212 EVO
ASUS Maximus VIII Hero ATX LGA1151
Samsung 850-EVO 500GB SSD
WD Blue 1TB SATA 6 GB/s 7200...