Operating system boot mode change

[Kelsonplays]

I need help activating my boot mode change I was trying to factory reset my laptop but that went wrong and now I had to do over some stuff and I got to this operating system boot mode change (021}

6425+enter- to complete change can someone helpe please 😭😭

[Lil_Boy_Blue]

Hi

This is a signing ceremony.

Initially the Main Board is Manufactured and MOK's (Machine Owner Key's) are embedded on the Main Board, typically HP and Microsoft for BIOS and OS fundamental security.

You can change. add, delete etc, as I have done by adding another Operating System from SuSE, hence the screenshot.

These screens may never be seen during the lifetime of the PC or if there is a development OS they could be generated on an almost daily basis as the Kernel is modified.

What/How yours was initiated I know not, but pressing ESC continues with the Status Quo, rather than install/accept a new Operating System.

Anymore details as to what preceded the screen?

Like a change from W7 to W10, or W10 to W8 or OR ????

[Kelsonplays]

That's the screen I'm getting but mine is whole black screen and it's just like that screen shot u sent me

I don't know what to do after that.