A step-by-step guide to fixing a black screen on MacBook Pro or an external monitor.

Troubleshoot connectivity issues and optimize your setup for a seamless dual-screen experience Reviewed by Lisa Mildon Check the cables and make sure they are the correct type and securely connected.

Jake Peterson is Lifehacker’s Senior Technology Editor. He has a BFA in Film & TV from NYU, where he specialized in writing. Jake has been helping people with their technology professionally since ...

MacBooks are known for their clean design, sharp Retina displays, and long-lasting build quality. But even the best machines can develop strange issues over time. One that often worries users is the ...