HT206886: How to get macOS Sierra

Learn about How to get macOS Sierra
agbaird

Q: MacBook Pro not starting after installing El Capitan OS

Having tried to install the El Capitan OS on my MacBook Pro the laptop is not booting up. The laptop crashed a couple of times during the process with characters appearing on the screen followed by automatic restarts. It is now stuck in startup mode with the progress bar showing about 5%. How do I get the laptop to start up?

Posted on Sep 17, 2016 4:17 PM