How to Reset the System Management Controller (SMC) on a Mac
This wikiHow teaches you how to reset the System Management Controller (abbreviated as 'SMC') on Mac computers. Resetting the System Management Controller can help to fix power issues such as the display back-light, fan speed, or USB...
Method 1 of 4:
On MacBooks with a Non-Removable Battery
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Picture 1 of How to Reset the System Management Controller (SMC) on a Mac Click. It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.Picture 2 of How to Reset the System Management Controller (SMC) on a Mac -
Picture 3 of How to Reset the System Management Controller (SMC) on a Mac Click Shut Down. It's in the Apple menu in the menu bar at the top. -
Picture 4 of How to Reset the System Management Controller (SMC) on a Mac Press and hold ⇧ Shift+Control+⌥ Option + Power Button. Press the buttons on the left side of the keyboard along with the power button.- The Touch ID button is also the power button if you have a newer MacBook Pro.
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Picture 5 of How to Reset the System Management Controller (SMC) on a Mac Release the buttons after 15 seconds. -
Picture 6 of How to Reset the System Management Controller (SMC) on a Mac Press the power button. Your MacBook will reboot as normal.
Method 2 of 4:
On MacBooks with a Removable Battery
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Picture 7 of How to Reset the System Management Controller (SMC) on a Mac Click. It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.Picture 8 of How to Reset the System Management Controller (SMC) on a Mac -
Picture 9 of How to Reset the System Management Controller (SMC) on a Mac Click Shut Down. It's in the Apple menu in the menu bar at the top. -
Picture 10 of How to Reset the System Management Controller (SMC) on a Mac Remove the battery. Locate the latches on each side of the battery and slide them up. Lift the battery out. Make sure your Notebook is completely shut down before removing the battery. -
Picture 11 of How to Reset the System Management Controller (SMC) on a Mac Press and hold the power button for 5 seconds. Release the power button. -
Picture 12 of How to Reset the System Management Controller (SMC) on a Mac Reinstall the battery. Place the battery back in the battery compartment. -
Picture 13 of How to Reset the System Management Controller (SMC) on a Mac Press the power button. Reboot your Mac notebook as normal.
Method 3 of 4:
On iMac
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Picture 14 of How to Reset the System Management Controller (SMC) on a Mac Click. It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.Picture 15 of How to Reset the System Management Controller (SMC) on a Mac -
Picture 16 of How to Reset the System Management Controller (SMC) on a Mac Click Shut Down. It's in the Apple menu in the menu bar at the top. -
Picture 17 of How to Reset the System Management Controller (SMC) on a Mac Unplug the power cord. Unplug the power cord from the wall, or the back of the monitor. -
Picture 18 of How to Reset the System Management Controller (SMC) on a Mac Wait 15 seconds. Allow your computer to sit for a moment. -
Picture 19 of How to Reset the System Management Controller (SMC) on a Mac Press and hold the power button for 5 seconds. -
Picture 20 of How to Reset the System Management Controller (SMC) on a Mac Plug the computer back in. Reattach the power cord to the back of the monitor and plug it into a power outlet. -
Picture 21 of How to Reset the System Management Controller (SMC) on a Mac Press the power button. Reboot your iMac as you normally would. The power button is located on the lower-left side of the back of the monitor.
Method 4 of 4:
On iMac Pro
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Picture 22 of How to Reset the System Management Controller (SMC) on a Mac Click. It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.Picture 23 of How to Reset the System Management Controller (SMC) on a Mac -
Picture 24 of How to Reset the System Management Controller (SMC) on a Mac Click Shut Down. It's in the Apple menu in the menu bar at the top. -
Picture 25 of How to Reset the System Management Controller (SMC) on a Mac Press and hold the power button for 8 seconds. -
Picture 26 of How to Reset the System Management Controller (SMC) on a Mac Release the power button and wait 5 seconds. -
Picture 27 of How to Reset the System Management Controller (SMC) on a Mac Press the power button. Reboot your iMac as you normally would. The power button is located on the lower-left side of the back of the monitor.
Update 05 March 2020
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