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
Cara Mengatasi EFI Network 0 for IP4 boot Failed Pada Laptop Lenovo G40
EFI Network 0 for IPv4 Boot failed 100% Working | Lenovo - YouTube