My daughter HP Envy 4-1115dx laptop booted up with the black screen and blue banner
“Selected boot image did not Authenticate – Press to Continue.”,
when I press , the laptop shuts down.
The problem was she some how hit F10 to access bios and selected the “Reset To Default” by mistake,
the legacy support was disabled and the “Secure Boot” was enabled.
The boot image was El Capitan OS X only supported with Legacy and Secure Boot disabled.