Chosen Solution
Why is my MacBook Pro continuously rebooting and showing these screens and how can I fix it?
Do you have a bootable external drive? See if booting up under it works. Restart your system with the external drive connected press and hold Option (⌥) key to get to the startup manager to select your external drive. If not you can also try to boot up under the recovery partition as well hold the Command (⌘) & R keys Reference Mac startup key combinations
