Restart MacBook Pro after system. Upgrade
Screen is blank. Computer won’t restart. Where’s the power button?
Question marked as
FrodoTheWizard wrote:
Screen is blank. Computer won’t restart. Where’s the power button?
In any upgrade the computer will go blank/black more than once, not advised to interrupt the install process— it will reboot on its own when complete...45 Minutes+ (?)
You force quit if necessary by holding the Power /TouchID button
force quit a shutdown by holding the power button/TouchID for ~6-10 sec.
Force Shut down your Mac.
Log out, sleep, wake, restart or shut down your Mac
Shut down or restart your Mac - Apple Support