Info How to enable Secure Boot on AMD based Gigabyte motherboards

[Colif]

Note: If you are just enabling it to install Windows 11, its is not necessary. Windows 11 just needs PC to be able to run Secure boot, it doesn't enforce it.
Valorant is a different story

credit to COLGeek for instructions

Steps to enable (all AMD-based Gigabyte mobos) Secure Boot. Make sure fTPM is enabled. Make sure CSM is disabled. (might help to save these changes by restarting and saving BIOS, before changing secure boot, as if you do it all in one move, it will not save these setting and you will need to repeat them after this next step)
In Secure Boot, select custom under Secure Boot Mode, Select Restore Factory Keys, Say YES to reset without saving.

When BIOS restarts, access BIOS and change Secure Boot Mode back to Standard and then Yes to restart without save.

Let Windows boot fully.

Use msinfo to verify that Secure Boot State is on.


if you don't do it this way, PC may not boot.



Note: You need to have converted drive to GPT before enabling secure boot or you will be met with a black screen on startup.
Master Boot Record drives can't boot in Secure boot so nothing happens.

How to switch from Legacy to UEFI boot mode (MBR2GPT conversion)

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[Colif]

Note: If you changing it just to install win 11, you don't need to.

Win 11 just needs PC to be capable of Secure boot, it doesn't have to be on.