MacBook Pro display issue troubleshooting
Is it possible to initiate screen mirroring during startup or after using a key combination?
Yesterday when I turned on my MacBook Pro the screen was displaying vertical bars of varying color and width. Now the screen is all white with one small grey or off-white vertical bar. I do not have a physical connection type or monitor available to confirm the screen is the issue rather than the GPU or CPU.
Does anyone know if I could use any key combination to start screen mirroring to my Apple TV before sign-in or if a wired connection to my iPhone could act as an external display?
Thank you.
MacBook Pro 13″, macOS 11.6