Testing the peripheral devices: after learning that the peripheral devices are responsible for the blue or grey screen issues, you have to single out the device which is causing the problem. If the Mac starts without any issues, the peripheral devices are to blame for the blue screen. Restarting the Mac: once you have disconnected all external peripheral devices, you can proceed to starting the Mac back up. Press and hold the power button to force it to shut down. Turning off the MacBook: turn off the MacBook before you disconnect any of the external peripheral devices. They may prevent the MacBook from properly executing the start-up sequence, and causing it to end up with a blue or grey screen. If you are having trouble getting rid of the grey or blue screen problem, follow these easy steps.ĭisconnecting all external peripheral devices: this step is important because the problem is sometimes caused by external devices (or cables).

The grey or blue screen is a problem as the MacBook becomes unresponsive until it has vanished, and is frustrating for MacBook Pro users. This can also happen after restarting the computer. Most MacBooks with in-built Retina displays are culprits of the blue or grey screen on start-up. It maintains its old name for reasons of convention.

The blue or grey screen is not called black screen even when the screen is black (this is true of most recent Mac models). Sometimes it may appear black, or so dark you might think your computer hasn’t started up at all. The blue or grey screen is the display that appears following the start-up of the MacBook Pro.

How to turn on macbook pro black screen