I have attempted to install Mint 22.3 on my old laptop (Lenovo Yoga C930) which was previously running Windows 11 and seem to have no operating system present on the laptop now and can not boot from my USB drive.
I started by downloading Mint 22.3 “Zena” on to a USB drive via Rufus, booted into Mint via the BiOS, and attempted to “Erase Disk and Install Linux Mint” by following the prompts. The install process gave some error messages as it proceeded and took significantly longer than the help videos I had watched beforehand suggested. I left it running over night and came back to it still attempting to install in the morning.
I pressed the power button on the laptop to stop it and when I turned it back on was met with a message along the lines of “remove bootable drive”. The next message I got was “Default Boot Device Missing or Boot Failed”, I hit OK and now there appears to be no OS on the Boot Manager.
When I put the bootable USB back in, the boot manager finds it but when I select it I receive: Failed to open \EFI\BOOT\mmx64.efi - Not Found Failed to load image (blank square): Not Found Failed to start MokManager: Not Found Something has gone seriously wrong: import_mok_state() failed: Not Found
This is my first time attempting to install an operating system so I really am not sure what went wrong or where to go from here, any help would be greatly appreciated.
Try turning off secure boot in the BIOS.
One other possibility is that the USB is corrupted. Unfortunately, Rufus doesn’t verify that the data was copied to the USB properly. Try using balenaEtcher instead of Rufus, since (as far as I can remember) it has an option to verify that the write was successful.
Thanks for the suggestion!
I don’t see an option in the BIOS to turn off the secure boot to do anything other than booting into the USB (hopefully the below image actually works). Seems like something I should have turned off before I tinkered though.

I’ll give balena a try and see if that can actually boot from the state its in.
Thats the boot manager not the BIOS? You need to go into the BIOS to disable secure boot. You need to press F2 immediately on restart. The BIOS has many more options including disabling secure boot and setting up a default boot order
The boot manager is accessed via F12 and only shows you available devices to boot based on the rules in the BIOS.
I installed Linux (Opensuse) on a Lenovo Yoga recently. I disabled secure boot prior to install and enabled USB boot to get the installer running.
Your linux install failed as it didnt complete so its best to reinstall completely, and I agree with the prior poster: use balena etcher to make a fresh USB stick and verify the ISO is intact. Or Ventoy is a good tool to set up a USB stick with too - you can drop isos onto a USB stick and pick whichever one you want to boot from. But verify the downloaded Mint ISO matches the original online file using the provided SHA on its download page.
you done goofed the secure boot stuff.
This looks promising, I’ll take a dive into it tomorrow. Thanks!
What error messages did the installer give? It sounds like the installer image was corrupted… My shot-in-the-dark theory would be a bad USB drive.
Thanks for the response! Unfortunately I don’t remember exactly what they were, something along the lines of being unable to find something and skipping it. Really kicking myself for not grabbing a couple pictures of it now…
When you say bad USB drive do you mean something Rufus might have done like the other comment mentioned or the drive itself might have an issue?
I still think it sounds like it could be a bad USB drive, and/or potentially SecureBoot as others in the thread have suggested.
Checking Secureboot is easy to check on first though.
I didn’t see an option to get into the secure boot setting when I checked it last. I’ll have to prod it more tomorrow to see what’s happening. Thanks for the suggestion!
It should be in the BIOS setup page. Make sure you’re not in the graphical interface, as in my experience Lenovo hides a lot of their settings in the GUI utility.



