My pc won't work default boot device missing or boot failed. Insert recovery media. Then select "boot manager" to choose boot device or boot recovery media. In boot manager comes up with
Lenovo Y50 / EFI network boot failure - Microsoft Community
Lenovo G40,G405, Efi Network 0 for IPv4 Boot Failed, Open BIOS, windows don't open on laptop - YouTube
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
Önce “efi network 0 for ipv4 boot failed” problemi, - Microsoft Community
Lenevo起動エラーを対策しました
Lenovo Y50 / EFI network boot failure - Microsoft Community
linux - EFI pxe network boot error - Super User
EFI Network 0 for IPv4 (68-F7-28-AE-0D-74) boot failed." Hatasi | Technopat Sosyal