Solved Strange behaviour of Windows 11 when trying to access UEFI with CSM disabled

Dru2 said:

I can't talk about AMD boards, but on Intel boards in order to enable Secure Boot, you'll have to disable CSM. If not, no Secure Boot.

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Same for AMD, most likely. I know that's the case with resizable-BAR.

I wouldn't recommend enabling Fast Boot from BIOS/UEFI. Usually comes Disabled by default for a very good reason, as in: If Disabled it skips the basics tests of your hardware. Thus, in case you have a hardware issue - instead of triggering a precautionary shutdown - your system will try to boot into Windows. Even Windows has safety feature - which can trigger a BSOD. But sometimes it's to late (might get fried before booting Windows).

No to mention - with a nVme SSD the Booting process is already 100x faster than with an HDD (more or less). So this unnecessary risk is quite ignorant - if you ask me.