So Gigabyte, thanks.. Please send me a zip of all your main BIOS pages, so I can see what you can see at a glance.
Main, Advanced, Save & exit etc all the main pages, you can F12 screenshot to USB, then put in zip or 7zip archive please and thanks.
Go to this thread and in the section "C" download the V12 ME System Tools Package
https://www.win-raid.com/t596f39-Intel-Management-Engine-Drivers-Firmware-amp-System-Tools.html
Once downloaded, inside you will find Flash Programming Tool folder, and inside that a Windows or Win/Win32 folder.
Select that Win folder, hold shift and press right click, choose open command window here (Not power shell).
At the command prompt type the following command and send me the created file to modify >> FPTw.exe -bios -d biosreg.bin
Right after you do that, try to write back the BIOS Region dump and see if you get any error, if you do show me image of the command entered and the error give >> FPTw.exe -bios -f biosreg.bin
If you are stuck on Win10 and cannot easily get command prompt, and method I mentioned above does not work for you, here is some links that should help
Or, copy all contents from the Flash Programming Tool \ DOS folder to the root of a USB Bootable disk and do the dump from DOS (FPT.exe -bios -d biosreg.bin)
https://www.windowscentral.com/how-add-c...ors-update
https://www.windowscentral.com/add-open-...windows-10
https://www.laptopmag.com/articles/open-...privileges