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

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If you have a 2018 iMac Pro, head on over to this guide as this guide will not work for your particular machine.

Note: you will need a wired, Apple-layout keyboard in order to perform this reset.

  1. How to reset the SMC, PRAM and NVRAM on a Mac Desktop, SMC Reset: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Follow these steps for iMac, Mac mini, Mac Pro, and Xserve.

    • Choose Apple menu > Shut Down.

    • After your Mac shuts down, unplug the power cord.

    • Wait 15 seconds.

    • Plug the power cord back in.

    • Wait 5 seconds, then press the power button again to turn on your Mac.

    • 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.

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  3. How to reset the SMC, PRAM and NVRAM on a Mac Desktop, PRAM/NVRAM Reset: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Shut down your Mac.

    • Turn it on and immediately press and hold these four keys together: Option, Command, P, and R.

    • You can release the keys after about 20 seconds, during which your Mac might appear to restart.

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If you have done all of these resets with no luck, you can head on over to our Answers Forum and ask for more assistance there!

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Nur zur Information: Beim "MAC" heisst das "Herunterfahren" - "AUSSCHALTEN"!!!

Walter Ludwig Soural - crwdns2934203:0crwdne2934203:0

Tras la actualizar mi MacBook Pro 2018, al encender solo se queda en pantalla azul sin dirigirse a la pantalla de inicio ni mostrar el logotipo, a parte se enciende la touchbar pero solo muestra botones como los del volumen y la luz. Ayuda por favor.

Lissa Rivas - crwdns2934203:0crwdne2934203:0

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