Hey there. I’m totally new to Linux. I’m not the most tech savvy, but I’m fed up with windows and want to go elsewhere. For the time being I figured I’d dual boot, and got everything set up on a usb. I plugged it in, booted up Linux Mint, and it worked smoothly. I ended the session, powered off my pc, removed the usb, booted up windows 11, freed up some disc space and did some other stuff on my computer, then turned it off for a bit. When I went to boot it up again, I got this message:

Failed to open \EFI\B00T\mmx64.efi - Not Found Failed to load image ??: Not Found Failed to start MokManager: Not Found
Something has gone seriously wrong: import mok-state() failed: Not Found

and then the computer powered off. I tried disabling fast start or whatever it’s called, as well as secure boot, and it’s still giving me that. Windows still boots up just fine. Does anyone have any advice? Like I said I don’t have much technical knowledge so a dumbed down response would be really appreciated. I’ve looked up a few forums and nothing gave me much.

Oh also, when I try to boot it and it gives me the error and turns off, if I turn it back on but boot up windows, I get a message saying something was blocked due to a security system I have to disable, but doesn’t tell me what that security system is or how to disable it. It’s getting a little frustrating. I don’t know why it worked once but not anymore.

Update: I got it working. Thanks everyone for the help.