Apple Macbook (Range)
This page lists various reset procedures for the Apple Macbook range of laptops. (Macbook Pro, Macbook Air, Macbook)
Resetting PRAM and NVRAM
- Shut down the computer.
- Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
- Turn on the computer.
- Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
- Hold the keys down until the computer restarts and you hear the startup sound for the second time.
- Release the keys.
System Management Controller (SMC) Reset
MacBook (13 inch, Late 2008), MacBook Pro (15-inch, Early 2008), and MacBook Pro (17-inch, Early 2008)
- If the computer is on, turn it off.
- Disconnect the AC adapter and remove the computer's battery.
- Press and hold the power button for 5 seconds and then release the button.
- Reconnect the battery and AC Adapter.
- Press the power button to restart the computer
MacBook Air and MacBook Pro (Late 2008 and later)
- If the computer is on, turn it off by choosing Shutdown from the Apple () menu.
- Connect the power adapter to a working power source.
- On the built-in keyboard, press (left) Shift-Control-Option along with the power button once.
- Wait 5 seconds and press the power button to start the computer.
MacBook Pro (2018 Onwards)
- Press the wake/sleep button for about 5 seconds to shut down the MacBook Pro.
- Plug in the cable to the right Thunderbolt port on the left side of the MacBook Pro.
- While holding down the power button, at the same time press all three of the following keys for about 3 seconds: Right Shift key, Left Option key, Left Control key
Note: You won’t see any screen activity from the 2018 MacBook Pro.
- Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up. If your Mac is using a firmware password, you're prompted to enter the password.
- Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes. If your Mac is using a firmware password, you're prompted to enter the password.
- Option-Command-P-R: Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
- Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
- D: Start up from the built-in Apple Hardware Test or Apple Diagnostics utility, depending on your Mac model. Or use Option-D to start up from this utility over the Internet. Disabled when using a firmware password.
- N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
- Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
- T: Start up in target disk mode. Disabled when using a firmware password.
- Command-V: Start up in verbose mode. Disabled when using a firmware password.
- Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.