Today I’m going to show how to reset SMC & PRAM on your Macbook Pro retina.

Sometime some functions such as USB ports, HDMI, MacSafe Adapter, and etc on your macbook pro retina are not working correctly. There are something called “SMC (System Management Controller)” and “PRAM (parameter random-access memory)” on your macbook. If there is a problem or crash on the SMC or PRAM, your macbook pro retina might not work correctly. Here is an easy solution you should try to fix this issue before you bring it into the Apple Store.

 

Symptoms you might have due to  SMC or PRAM collision:

– MagSafe power adapter indicator not displaying properly?

– USB ports not working properly?

– HDMI ports not working properly?

– Fans spinning too fast or too slow?

– Battery is not charging?

– Screen brightness control is not working?

– Keyboard backlights not working properly?

– Your macbook won’t respond?

 

NOTE: There are two different MacBooks. One with a removable battery, one with a built-in battery. Use the right method for your MacBook!

 

How to backup my Macbook ? Here is how to backup files to an external hard drive !

Click here to backup my Macbook >
 

Resetting the SMC – A MacBook with a battery you can remove.

Step 01. Shut down your Macbook.

Step 02. Unplug the Magsafe Power Adapter from your MacBook.

Step 03. Remove the battery.

Step 04. Press and hold the power button for 5 seconds.

Step 05. Release the power button after 5 seconds.

Step 06. Insert the battery and plug the Magsafe Power Adapter back in.

Step 07. Press the power button to start your MacBook.

 

 

Resetting the SMC – A macbook with a battery you can’t remove by yourself. (Built-in battery)

Step 01. Shut down your MacBook.

Step 02. Connect the MagSafe power adapter into your MacBook. If it’s already connected, leave as is.

Step 03. Press Shift + Control + Option + Power keys at the same time.

Step 04. Release all the keys from the keyboard.

Step 05. Press the power button to start your MacBook.

 

Resetting the PRAM (For All MacBook Laptops.)

Step 01. Shut down your MacBook.

Step 02. Press and Hold Option + Command (⌘) + P + R.

Step 03. Turn on your MacBook while holding the keys (Option + Command (⌘) + P + R).

Step 04. Keep holding the keys (Option + Command (⌘) + P + R) until your MacBook restarts (You will see the grey screen appears before it restarts.)

Step 05. Release the Keys.

Step 06. If you hear the startup booting sound for the second time, that means the PRAM has been reset.

 

Resetting PRAM on LATE 2016 MACBOOK PRO MODELS

Step 01. Please Shut down your MacBook.

Step 02. Press and Hold Option + Command (⌘) + P + R.

Step 03. Turn on your MacBook while holding those keys (Option + Command (⌘) + P + R).

Step 04. Keep holding those keys (Option + Command (⌘) + P + R) for about 20 seconds.

 

GOOD JOB !

 

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