To force quit any application that isn’t responding, press Command-Option*-Escape.Then, to switch on your Mac, press the power button once again. Any open programmes will lose any unsaved work. Press and hold the power button until your Mac shuts down if it isn’t responding.After each step, test the issue to see if it still exists. When you move a Mac Pro (late 2013), the lights around the I/O ports does not turn on.īefore you reset the SMC, try each of these actions in the order listed above.A Mac that supports target display mode does not switch into or out of target display mode as expected, or at inopportune moments.Even though your Mac’s CPU isn’t under any especially heavy demand, it runs slowly.If present, the MagSafe power adapter LED does not show proper charging activity.External devices attached to the built-in USB-C connector on your MacBook or MacBook Pro are not recognised.The built-in USB-C port on your MacBook or MacBook Pro does not charge.The display backlight does not adjust to variations in ambient light.You can’t turn your Mac back on if it sleeps or shuts down unexpectedly.When you close or open the lid on your Mac notebook, it does not respond properly.When you push the power button on your Mac, nothing happens.
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