You will not hear any startup sound during this process and the Mac’s monitor will show nothing on the screen.Īfter resetting NVRAM, you might need to reconfigure settings for speaker volume, screen resolution, startup disk selection, and time zone information.ģ.
The following steps show the NVRAM resetting for your Thunderbolt 3 Macs which includes late-20 MacBook Pro models.ī.Find Command (⌘), Option, P, and R on your keyboard.ĭ.Press and hold the Command-Option-P-R keys immediately after you turn on your Mac.Į.Hold these keys down for at least 60 seconds to ensure that your Mac completes the process correctly.
Repeat D and E until you hear the 4th startup sound then release the keys.Ģ. Hold these keys until the computer restarts and you hear the startup sound for a second time.į. Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.Į. Find Command (⌘), Option, P, and R on your keyboard.ĭ. The following steps show the NVRAM resetting for your Macs which includes non-Thunderbolt, and Thunderbolt 1, 2 Macs.ī. New M1 Mac computers can achieve this same results by using a simple cold reboot***ġ. ***Please note that this process is only meant for Intel-based Mac computers.
