Default Boot Device Missing or Boot Failed? Top 6 Solutions!
8 Efficient Ways to Fix Lenovo Laptop Stuck in Boot Loop in Windows - EaseUS
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
Effectively Solved: Default Boot Device Missing or Boot Failed
Fixed – Default Boot Device Missing or Boot Failed on Lenovo/Acer - MiniTool
Some Lenovo Legion laptops reportedly fail to boot after Windows BIOS update
HELP!! my Lenovo Yoga Duet 7 is having “Default Boot Device Missing or Boot Failed” : r/laptops
How to Fix Lenovo Stuck On Boot Menu?
Default Boot Device Missing or Boot Failed Insert Recovery Media and Hit any key, Lenovo Ideapad - YouTube