How To Clean Your Macbook To Sell

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This wikiHow teaches you how to reset your MacBook Pro's NVRAM and battery settings, as well as how to wipe your MacBook Pro and restore it to its factory settings. Resetting a Mac's NVRAM can help fix errors in things like your battery's display, while battery settings can be reset if your Mac is frequently overheating or crashing. Restoring your MacBook Pro to its factory settings will erase everything on the hard drive and reinstall the operating system.

1
Understand what resetting NVRAM will fix. NVRAM—short for "Non-Volatile Random-Access Memory"—stores settings like speaker volume, the default display, and other settings that your Mac typically uses. Resetting the NVRAM can fix problems wherein your MacBook Pro isn't playing sound, the display is flickering or turning itself off, the computer is taking too long to start up, and similar problems.
- On some Macs, "NVRAM" is replaced with "PRAM" ("Parameter Random-Access Memory"), which is fundamentally similar to NVRAM.
2

Open the Apple menu . Click the Apple logo in the top-left corner of the screen. A drop-down menu will appear.

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3

Click Shut Down… . It's at the bottom of the Apple menu.
4

Click Shut Down when prompted. Doing so prompts your MacBook Pro to shut down.
5

Find the NVRAM reset keys. To reset NVRAM, you'll have to hold down the ⌘ Command , ⌥ Option , P , and R keys all at the same time for about 15 seconds.
6

Turn back on your Mac. Press the "Power"

button on your Mac to prompt your Mac to begin turning back on.
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Press and hold the NVRAM reset keys. Do this immediately after pressing your Mac's "Power" button; you'll need to be pressing all four keys at once before the Apple logo appears.
- If the Apple logo appears before you press the keys, you'll have to shut down and try again.
8
Continue holding the keys until your Mac finishes starting up. Your Mac may reboot itself during this process. Once you arrive at the user selection screen, you can release the keys and sign into your MacBook Pro like you usually do.
- You may need to reset some of your preferences (e.g., preferred audio output) after resetting the NVRAM.
9

Verify that the problem has been resolved. If you are still having issues with the system settings, you may need to factory reset your MacBook Pro. You will lose any data that you have saved on the MacBook if you do so.

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1

Understand what resetting the battery will fix. To reset the battery, you'll actually reset the SMC (System Management Controller) which is a small chip that controls things like your Mac's external lights, responses to button presses, and battery management. Resetting the SMC may improve battery life, fix overheating problems, and speed up your MacBook Pro.^[1]
2
Check the symptoms. There are several symptoms that are directly related to the SMC:
- The fans are loud and running at high speed even though the computer isn't hot and is well-ventilated.
- Indicator lights (battery, backlights, etc.) are not working properly.
- The MacBook doesn't respond to pressing the Power button.
- The computer shuts itself down or goes to sleep unexpectedly.
- The battery does not charge properly.
3

Open the Apple menu . Click the Apple logo in the upper-left side of the screen. Doing so prompts a drop-down menu.
4

Click Shut Down… . It's at the bottom of the drop-down menu.
5

Click Shut Down when prompted. Your MacBook Pro will shut down.
6

Attach your MacBook Pro to a plugged-in charger. Make sure that the charger is plugged into a wall outlet, then plug the charging end into the port on the right side of your MacBook Pro.
7
Find the SMC reset keys. In order to reset the SMC, you'll need to hold down the ⌘ Command , ⌥ Option , and ⇧ Shift keys all at the same time while also holding down the "Power"

button.
- If your MacBook Pro has a touch bar, the "Power" button is also the Touch ID button.
8

Press and hold the SMC reset keys for 10 seconds. Once you've done so, you can release the keys.
9

Press the "Power" button. Doing so should turn on your Mac, prompting it to begin restarting. Once your Mac finishes restarting, your battery issues should be resolved.
10

Verify that the problem has been resolved. If you are still having issues with the battery, you may need to factory reset your MacBook Pro. You will lose any data that you have saved on the MacBook if you do so.

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1
Back up your Mac if possible. Since restoring your Mac to its factory settings will erase everything on your hard drive, it's a good idea to back up anything that you want to save before doing so.
- If you can't log into your Mac or you're unable to run your Mac's Time Machine, skip this step.
2

Open the Apple menu . Click the Apple logo in the top-left corner of the screen. A drop-down menu will appear.
3

Click Restart… . It's near the bottom of the drop-down menu.
4

Click Restart when prompted. Doing so will cause your Mac to begin restarting itself.
5

Hold down the ⌘ Command and R keys at the same time. You'll need to do this immediately after clicking Restart.
6

Release the keys when you see the Apple logo. Your MacBook will begin booting into the Recovery window. This process can take a few minutes to complete.
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Select Disk Utility . It's in the middle of the Recovery window.
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Click Continue . This button is in the bottom-right corner of the window. Doing so opens the Disk Utility window.
9
Select your Mac's hard drive. Click the Mac's hard drive's name in the upper-left side of the Disk Utility window.
- Your Mac's hard drive will be named "Macintosh HD" if you didn't rename it.
10

Click the Erase tab. It's at the top of the Disk Utility window. A new window will open.
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Click the "Format" drop-down box. Doing so will open a drop-down menu.
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Click Mac OS Extended (Journaled) . It's in the drop-down menu.
- This is the basic disk format used for Mac hard drives.
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Click Erase . This button is in the bottom-right side of the window. Your Mac's hard drive will begin erasing itself.
- The erasing process can take a few hours, so make sure that your Mac is plugged into a charger.
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Click Done when prompted. Your Mac should now be completely erased.
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Click Disk Utility . It's a menu item in the top-left corner of the screen. A drop-down menu will appear.
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Click Quit Disk Utility . This option is at the bottom of the drop-down menu. Clicking it takes you back to the Recovery window.
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Select Reinstall macOS . It's in the Recovery window.
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Click Continue . This option is in the bottom-right corner of the window. MacOS will begin downloading onto your computer.
- You must have an Internet connection for MacOS to download onto your computer.
19

Follow any on-screen prompts. Once MacOS finishes downloading, you'll be able to install and set up the operating system as though the Mac were brand-new.

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Add New Question

Question

After turning on my MacBook Pro, the display shows a flashing folder icon with a question mark on it. and I cannot do anything. How can I fix it?

The flashing folder icon shows that your MacBook can't find the essential drivers and files it needs to load. Pressing the Command and R keys would normally launch local recovery via the recovery partition on the Mac. Since this isn't possible, you need to recover via the Internet. Instead of holding just the command and R keys when you switch on, hold the option key down as well. An animated globe will appear while Internet Recovery initializes. Once that's done, you'll need to select a WiFi network. The animated globe will reappear while the Mac downloads recovery files from Apple servers. When complete, macOS Utilities will appear so you can recover.
Question

When turning on it just displays the Apple icon and the thinker just spins. I tried all four reboot options and nothing?

Hold V on boot up to get a log and look for any "errors" or warnings in the log. Then look up whatever the errors were. It will look overwhelming as it shows the whole bootup console, but look for wherever it stops. For example, eventually it may stop having messages. Look into that to see where the problem may lie, then consider getting some professional assistance if you're unsure.
Question

My computer doesn't allow me to log in to my account. It starts to log in, but after the loading bar is more than 60%, it stops. What could be the problem?

Carmello Bilotti

Community Answer

Restart your Mac, and while it is restarting, hold Command-R until the OS Utilities screen comes up. Click Restore from Time Machine backup, then restore your computer to an earlier point.
Question

I forgot my Macbook Pro password -- can I reset and use my Apple ID to login?

You have to be logged into the Macbook in order to change the password. So if you don't know the password, you're out of luck.
Question

What do I do if my Macbook mouse clicker isn't working?

Check to see if battery is swollen under the mouse pad, restricting it from the normal pressure. You may need to replace the battery if it is swelling.
Question

How do I reset a MacBook Pro if my keyboard doesn't work?

Try an external keyboard if your computer has a USB port. Plug it into your computer, and it should be an easy fix.
Question

What do I do if my Macbook won't power on?

Carmello Bilotti

Community Answer

Plug it into the charging outlet, wait about an hour, then turn it on.
Question

How do I restore my start up disc when it us full for a Macbook pro?

Buy a terabyte system in order to store up everything that you have on the MacBook Pro, then reset it. Then replace the storage disc, which allows you to store additional stuff onto your MacBook Pro.
Question

I can't get far enough to even open anything before I get a blue screen of death. What can I do?

Macs don't BSOD, they kernel panic. However, if your computer crashes, take it to the Apple Store for support.
Question

I want to factory reset my Macbook Pro w/Retina Display (15 inch, 2014), because it is acting up badly. It will not let me erase the disc conventionally. What can I do?

Carmello Bilotti

Community Answer

Restart your Mac, and while it is restarting, hold Command-R until a screen with OS X/MacOS utilities comes up. In the menu bar, click Utilities, then Click Wifi. Then, connect to your network. Once connected, close that window. Click reinstall MacOS/OS X. Everything will be erased, and your OS will be reinstalled.