Question Peripherals not working during boot process

Oct 9, 2020
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My keyboard and mouse don't work during the boot process to access BIOS or select an OS in gnu grub 2.02.
They'll work only once after I perform a CMOS reset and then it goes back to not working after loading an OS.
Resetting the computer during OS selection in grub also seems to fix it for one boot.

Computer Specs:
  • OS: Dual boot w/ GNU Grub 2.02 :: Windows10 ver.2004 / Ubuntu 20.04
  • Motherboard: Gigabyte GA-Z87X-UD3H ATX LGA1150 Motherboard
    • Running wmic bios get smbiosbiosversion returns F7
  • CPU: Intel i7-4770K
  • RAM: G.Skill Trident X 16GB (2 x 8GB) DDR3-1600 CL7 Memory
  • Storage: WD Caviar Black 1TB 3.5" 7200RPM
  • Storage: Samsung 840 Pro Series 512GB 2.5" SSD (Used to store OS's)
  • Video Card: Asus GeForce RTX 2070 8GB STRIX
  • Power Supply: XFX ProSeries 1000W 80+ Platinum Certified Fully Modular ATX
UEFI DualBIOS settings:
  • Fast Boot = Disabled
  • Legacy USB Support = Enabled
  • EHCI Hand-off = Disabled
  • XHCI Hand-off = Enabled
Things I've tried:
  • Switching around USB ports to all ports for keyboard
  • Using different USB keyboards
  • Enabling EHCI Hand-off
  • Getting to the BIOS through Windows10 -> Settings -> Update & Security -> Recovery -> Advanced startup -> Restart -> BIOS
  • Updating Windows 10 to ver.2004
  • Uninstalling and reinstalling all Generic USB Hub, USB Root Hub, USB Root Hub (USB 3.0) under Device Manager -> Universal Serial Bus controllers
It feels like doing a CMOS reset fixes whatever BIOS setting was the problem but the moment I boot an OS, it doesn't save and changes back to its broken state.
Let me know if there's any other info I can give to help fix
 
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