I had a Lenovo fail to boot but had to reset the BIOS back to defaults in each screen and then the HDD showed up. If you don't have a HDD show, let's hope you can put in a new HDD then restore from your recovery media and backups.
Bob
My Lenovo G505 laptop running Windows 8.1 gave me error messages that say:
"EFI Network 0 for IPV6 boot failed."
"EFI Network 0 for IPV4 boot failed."
"Default Boot Device Missing or Boot Failed. Inset Recovery Media and Hit any key. Then Select 'Boot manager' to choose a new Boot Device or to Boot Recovery Media"
Then it goes to the boot option menu and gives me a list of the two boot options:
"EFI Network 0 for IPV4"
"EFI Network 0 for IPV6"
with no option to select the HDD despite BIOS being able to detect it.
I changed the boot mode to Legacy Support from UEFI, and this time on the boot option menu I got a choice to boot from the HDD or the ODD. When I chose to boot from the HDD I got another message saying "Check cable connection!" PXE-MOF: Exiting Intel PXE ROM."
I tried to boot Ubuntu from a flash drive and from a CD, but I still got the same result as when I tried booting from the HDD.
I think the problem is that my Laptop won't boot in legacy support, but when I use UEFI I only have the option of booting from the network. I have no idea how I could fix this, so any suggestions are appreciated.

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