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The System Management Controller (SMC) takes care of all sorts of things behind the scenes in your Mac, from battery management to keyboard backlighting. Fabian Irsara/Unsplash Reset the System Management Controller If your Mac is entirely locked up and the above steps won’t work, press Ctrl+Opt+Cmd and the power button at the same time this will reboot your Mac. Select the app you want to close, then click Force Quit (or Relaunch if Finder has frozen), then click Force Quit on the confirmation dialogue box. Hold Option (labeled as Alt on some Mac keyboards) until Quit becomes Force Quit click this.Īlternatively, try pressing Opt+Cmd+Esc to open the Force Quit window. If an app has frozen and quitting it won’t work, Ctrl+click its icon in the Dock, then hover the pointer over the Quit button. The first thing to try if your Mac is unresponsive is checking if an app has frozen, as sometimes this can also lock up your Mac.
