Cfrgtkky

I just tried switching from windows 10 to linux and had decided to go with Ubuntu. I went through the installation steps on ubuntus website (using Rufus and such to format the usb) and completed the installation to replace my windows 10. It then prompted me to to reboot my PC, I continued when it started to reboot I received a full page of squashFS errors that filled the screen and then my PC turned off. Upon turning it on again I got this message.

Failed to open EFIBOOTmm64.efi - Not Found Failed to load image

EFIBOOTmm64.efi - Not Found Failed to Start MokManager: Not Found 

something has seriously gone wrong: Import_Mok_stat()Failed

:Not Found

And then My PC turns off
I have opened Bios with f2, and have also truned it on and used f12 to choose to boot through usb.
I have gone through an disabled the secure boot in bios and have reformated and put a new version of ubuntu downloaded from the dev website onto the usb(same as the first time) but I still get the same message. It's a real shame because I wanted to try out this OS and after thinking it over for a while I took the plunge and now my PC doesn't work. I feel like there is no looking back at this point so If anyone knows how to help much would be appreciated. I am excited to learn more about Linux.

 My PC is a Lenovo Y150p




Bios version    74cn44ww (v3.05)

EC Version      74ec44ww (v3.05)

CPU             Intel(R) Core(TM) i7-4700mq CPU @2.40ghz

System Memory   8.192gb

Harddisk        ST1000LM024 HN-M101MBB

ODD             PLDS   DVD-RW DU8A5SH

Windows License STD

I had the similar problem with an HP laptop. I solved it by going dual boot. Since you completely erased your hard drive installing uBuntu and already activated windows 10 (assumed) then I'll introduce you to the steps I made to create a Ubuntu Server 18.04, except you'll continue to install Ubuntu Desktop instead of Server.

1. Download a current Microsoft Media Creation Tool and get an ISO of the latest Windows 10 build. Use Rufus to format a USB flash drive to boot. When you boot into the windows installation environment and get to the install now button, at the bottom left corner, you'll see Repair Your Computer. Click into that link and you'll be show a list of options, go into Troubleshoot then Advanced Options, select Command Prompt. Type in the following:
   diskpart then ENTER key. You'll get to the disk partitioning environment, then type: list disk ENTER , this will show you a list of disks available. You will generally see two disks or two volumes, the flash drive and the hard drive. Look for your hard drive which is usually disk 0 (zero) and type: select disk 0 ENTER. Now type: clean ENTER. This will turn your HDD into a raw drive with no formatting. Type: Exit ENTER to leave the environment. Then type: Exit ENTER to leave the command environment. This will bring you back to the Windows 10 installation, choose to shut-down your PC.




2. Boot with the Windows 10 flash drive you already made. and follow the Windows 10 installation process, when you get to the Product Key choose Skip or Don't have key, Use Custom: Install windows only, Where to install Windows, here is where you will create a New partition to install windows 10. I allocated 70GB or 70000 MB for windows out of my 500GB HDD. Select the partition you made for Windows 10 and continue with installation, when you are interviewed by windows to set-up an account, create a local account only, resist using the e-mail option. When you are presented with customize settings, turn everything off, and don't use Cortana.




3. Windows 10 should now be up and running, update windows 10, while it's updating, turn off fast shutdown by going into windows start button, settings, system, power & sleep, additional power settings, Choose what closing the lid does. Here you'll see that Turn on fast startup is greyed out, so above you'll see Change settings that are currently unavailable, click on that then you'll be able to uncheck Turn on fast startup, click save changes. Right-mouse click on the start button and select Disk Management. Here you'll see Disk 0 with the unallocated space, we are going to turn this into a raw partition so that Ubuntu will see it and use it. Right-mouse click on unallocated and select new simple volume. Accept auto size click on NEXT, Do not assign a drive letter NEXT, Do not format this volume NEXT, click on FINISH. Close this window and return back to windows updates where you'll wait until windows 10 updates and reboots and then check updates again and reboot if needed, now you're ready to installed Ubuntu. Shutdown your PC.




4. I have not gone through the Ubuntu Desktop installation process because I was focused on installing server, so I lack that experience. But looking at screen shots from Ask Ubuntu, I can see that you can select Something Else under Installation Type. Then select the Raw partition that we prepared earlier and format it to use EXT4. Continue with the Ubuntu installation at this point.




5. Side note for Ubuntu Server Installers, doesn't pertain to you but will show up in a search for installing server 18.04. I had to use the traditional installer for the server in order to get to an area where I can select my raw partition. By using the common installer, I didn't get the "Something Else," I got the use all of the drive option only, which I chose at first but then my HP laptop wouldn't boot up, did this twice (once with an unallocated space and 2nd with a RAW partition), so I learned my lesson and went the dual boot way with the traditional installer.