Default Boot Device Missing or Boot Failed, insert recovery media and hit any key, Lenovo Ideapad - YouTube
EFI Network 0 for IPv4/IPv6 Boot Failed On Lenovo[SOLVED]
Only Boot option is EFI PXE Network : r/Lenovo
The Lenovo G50‑80 boot failed. It's showing 'EFI network 0 for ipv4 and IPv6. Boot failed'. Is the hard disk damaged, or can I use it externally? - Quora
grub2 - Lenovo IdeaPad 100s grub installation failed and disk disappeared - Ask Ubuntu
Unable to UEFI PXE boot HP laptops - OSD - BigFix Forum