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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

  1. How to Reset the System Management Controller (SMC) on a Mac Picture 1How to Reset the System Management Controller (SMC) on a Mac Picture 1
    Click
    How to Reset the System Management Controller (SMC) on a Mac Picture 2How to Reset the System Management Controller (SMC) on a Mac Picture 2
    . It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.
  2. How to Reset the System Management Controller (SMC) on a Mac Picture 3How to Reset the System Management Controller (SMC) on a Mac Picture 3
    Click Shut Down. It's in the Apple menu in the menu bar at the top.
  3. How to Reset the System Management Controller (SMC) on a Mac Picture 4How to Reset the System Management Controller (SMC) on a Mac Picture 4
    Press and hold ⇧ Shift+Control+⌥ Option + Power Button. Press the buttons on the left side of the keyboard along with the power button.
    1. The Touch ID button is also the power button if you have a newer MacBook Pro.
  4. How to Reset the System Management Controller (SMC) on a Mac Picture 5How to Reset the System Management Controller (SMC) on a Mac Picture 5
    Release the buttons after 15 seconds.
  5. How to Reset the System Management Controller (SMC) on a Mac Picture 6How to Reset the System Management Controller (SMC) on a Mac Picture 6
    Press the power button. Your MacBook will reboot as normal.
Method 2 of 4:

On MacBooks with a Removable Battery

  1. How to Reset the System Management Controller (SMC) on a Mac Picture 7How to Reset the System Management Controller (SMC) on a Mac Picture 7
    Click
    How to Reset the System Management Controller (SMC) on a Mac Picture 8How to Reset the System Management Controller (SMC) on a Mac Picture 8
    . It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.
  2. How to Reset the System Management Controller (SMC) on a Mac Picture 9How to Reset the System Management Controller (SMC) on a Mac Picture 9
    Click Shut Down. It's in the Apple menu in the menu bar at the top.
  3. How to Reset the System Management Controller (SMC) on a Mac Picture 10How to Reset the System Management Controller (SMC) on a Mac Picture 10
    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.
  4. How to Reset the System Management Controller (SMC) on a Mac Picture 11How to Reset the System Management Controller (SMC) on a Mac Picture 11
    Press and hold the power button for 5 seconds. Release the power button.
  5. How to Reset the System Management Controller (SMC) on a Mac Picture 12How to Reset the System Management Controller (SMC) on a Mac Picture 12
    Reinstall the battery. Place the battery back in the battery compartment.
  6. How to Reset the System Management Controller (SMC) on a Mac Picture 13How to Reset the System Management Controller (SMC) on a Mac Picture 13
    Press the power button. Reboot your Mac notebook as normal.
Method 3 of 4:

On iMac

  1. How to Reset the System Management Controller (SMC) on a Mac Picture 14How to Reset the System Management Controller (SMC) on a Mac Picture 14
    Click
    How to Reset the System Management Controller (SMC) on a Mac Picture 15How to Reset the System Management Controller (SMC) on a Mac Picture 15
    . It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.
  2. How to Reset the System Management Controller (SMC) on a Mac Picture 16How to Reset the System Management Controller (SMC) on a Mac Picture 16
    Click Shut Down. It's in the Apple menu in the menu bar at the top.
  3. How to Reset the System Management Controller (SMC) on a Mac Picture 17How to Reset the System Management Controller (SMC) on a Mac Picture 17
    Unplug the power cord. Unplug the power cord from the wall, or the back of the monitor.
  4. How to Reset the System Management Controller (SMC) on a Mac Picture 18How to Reset the System Management Controller (SMC) on a Mac Picture 18
    Wait 15 seconds. Allow your computer to sit for a moment.
  5. How to Reset the System Management Controller (SMC) on a Mac Picture 19How to Reset the System Management Controller (SMC) on a Mac Picture 19
    Press and hold the power button for 5 seconds.
  6. How to Reset the System Management Controller (SMC) on a Mac Picture 20How to Reset the System Management Controller (SMC) on a Mac Picture 20
    Plug the computer back in. Reattach the power cord to the back of the monitor and plug it into a power outlet.
  7. How to Reset the System Management Controller (SMC) on a Mac Picture 21How to Reset the System Management Controller (SMC) on a Mac Picture 21
    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

  1. How to Reset the System Management Controller (SMC) on a Mac Picture 22How to Reset the System Management Controller (SMC) on a Mac Picture 22
    Click
    How to Reset the System Management Controller (SMC) on a Mac Picture 23How to Reset the System Management Controller (SMC) on a Mac Picture 23
    . It's the apple icon in the upper-left corner in the menu bar. This opens the Apple drop-down menu.
  2. How to Reset the System Management Controller (SMC) on a Mac Picture 24How to Reset the System Management Controller (SMC) on a Mac Picture 24
    Click Shut Down. It's in the Apple menu in the menu bar at the top.
  3. How to Reset the System Management Controller (SMC) on a Mac Picture 25How to Reset the System Management Controller (SMC) on a Mac Picture 25
    Press and hold the power button for 8 seconds.
  4. How to Reset the System Management Controller (SMC) on a Mac Picture 26How to Reset the System Management Controller (SMC) on a Mac Picture 26
    Release the power button and wait 5 seconds.
  5. How to Reset the System Management Controller (SMC) on a Mac Picture 27How to Reset the System Management Controller (SMC) on a Mac Picture 27
    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.
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