I've successfully install Sierra on my PC, but I have some minor issues. Please take a look.

[TheRhynock]

First off thank you for taking a look at my thread. I'll try to keep this short but provide all the necessary information. First off this is the computer I've installed macOS X Sierra on. I have Windows 10 installed on the SanDisk 480GB, Sierra on the Samsung 500GB and nothing all the SanDisk 960GB.

Here are the problems I'm running into.

1. I can't boot into Sierra without using the bootable USB drive I used to install it with. If I choose to boot from the Samsung 500GB directly from the bios it says to choose a proper boot drive.
2. Every time I restart the computer an addition Samsung 500GB boot option is shown in the bios. Here is a picture of that
   
3. I'm using a LG 34" Ultrawide monitor and I can't for the life of me figure out how to get 2560x1080 displayed properly. I have tried using SwitchResx and a terminal command I found on Github.
4. When I boot my computer sometimes it will skip the BIOS option and boot straight into Windows. I can be pushing F12 the whole time and it will just go to Windows anyways.

Thank you, Rhynock

Major Components:
Intel Core i5-6500 3.2GHz Quad-Core Processor
Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Gigabyte GA-H110M-A Micro ATX LGA1151 Motherboard
Kingston HyperX Fury Black 8GB (2 x 4GB) DDR4-2133 Memory
MSI GeForce GTX 1070 8GB Video Card

Other Components:
Sandisk Ultra II 480GB 2.5" Solid State Drive
Samsung 850 EVO-Series 500GB 2.5" Solid State Drive
Sandisk Ultra II 960GB 2.5" Solid State Drive
EVGA SuperNOVA NEX 650W 80+ Gold Certified Fully-Modular ATX Power Supply
Fractal Design Arc Mini R2 MicroATX Mini Tower Case
LG 34UM57-P 34.0" 2560x1080 60Hz Monitor
Rosewill RGB80 Wired Gaming Keyboard
Logitech G300S Wired Optical Mouse

 

[BreBo]

Check this topic to get rid of the boot entries:
[GUIDE] Remove extra Clover BIOS boot entries & prevent further problems

According to this topic upgrading your BIOS to F20 will fix flooding the BIOS with excessive boot options:
PSA: Gigabyte F20B BIOS changes