How do I reset my Mac PRAM or NVRAM?

Answered by Tom Adger

Resetting the PRAM (Parameter Random Access Memory) or NVRAM (Non-Volatile Random Access Memory) on your Mac can help resolve certain issues with your computer’s settings. Here’s a step-by-step guide on how to reset the PRAM or NVRAM on your Mac:

1. Shut down your Mac completely by going to the Apple menu and selecting “Shut Down.”

2. Once your Mac is turned off, locate the Option (⌥), Command (⌘), P, and R keys on your keyboard. These keys are usually found in the top left corner of the keyboard.

3. Press and hold the Option, Command, P, and R keys simultaneously.

4. While holding these keys, turn on your Mac by pressing the power button.

5. Keep holding the keys until you hear the startup sound for the second time, or for about 20 seconds if your Mac doesn’t play a startup sound. The screen may appear black initially, but continue to hold the keys.

6. Release the keys after the second startup sound or after 20 seconds. Your Mac will then continue to boot up normally.

7. Once your Mac has started up, you can check if the PRAM or NVRAM has been reset by adjusting certain settings. For example, you might need to reconfigure your startup disk, time zone, volume settings, or screen resolution.

It’s important to note that not all Mac models have PRAM or NVRAM, and the settings that can be reset may vary depending on the specific model. Additionally, resetting the PRAM or NVRAM should not cause any data loss, but it’s always a good idea to have a backup of your important files, just in case.

If you continue to experience issues with your Mac after resetting the PRAM or NVRAM, you may want to consider other troubleshooting steps or seek further assistance from Apple Support or an authorized service provider.

Resetting the PRAM or NVRAM on your Mac involves shutting down your computer, pressing and holding the Option, Command, P, and R keys simultaneously, turning on your Mac, and releasing the keys after the second startup sound or after 20 seconds. This procedure can help resolve certain issues with your Mac’s settings.