Good day, I tried to boot the elementary OS after repair grub (How can I fix a secure boot failing to grub when I installed 0.3.1?), but he has returned me the error attached in the picture and I can no longer access the OS.. also i can´t reach Elementary OS booting from USB pen drive (stuck on black screen)
I´m on a Lenovo z40-70 and win8.1
Thanks to response from @Ravan.