Chosen Solution
Hi, The laptop powers off during boot. Tried to boot from local drive, USB external, Internet recovery mode. It simply powers off itself when boot progress bar are running. Any ideas? Thanks!
Have you tried to run an SMC reset? Try that first and then report back! https://support.apple.com/en-us/HT201295 (while powered off, connect to power, then hold left side, shift, control, and option, then press the power button. wait 5 seconds (you might see the mag-safe connector go from green to orange, then green again) then try again)
