How to reset the SMC, PRAM and NVRAM on a Mac Desktop

ID: 113256

Description: If you have a 2018 iMac Pro, head on over to...

Steps:

  1. Follow these steps for iMac, Mac mini, Mac Pro, and Xserve.
  2. Choose Apple menu > Shut Down.
  3. After your Mac shuts down, unplug the power cord.
  4. Wait at least 15 seconds.
  5. Plug the power cord back in.
  6. Wait 5 seconds, then press the power button again to turn on your Mac.
  7. For Intel-based Xserve computers that aren't responding, you can shut down locally or by using remote commands. You can also press and hold the power button for 5 seconds.
    8. Step image
  8. Shut down your Mac.
  9. Turn it on and immediately press and hold these four keys together: Option, Command, P, and R.
  10. You can release the keys after about 20 seconds, during which your Mac might appear to restart.
    11. Step image
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