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.