MacBook USB ports not working, reading? or recognized? Try an SMC + PRAM Reset to solve this problem.
MacBook USB port not working properly? or won’t recognize any USB devices? Seems like there is a bunch of people who are having USB ports issues in MacBook Pro or Air. Don’t worry anymore, Here is a way to solve this issue. We are going to reset the SMC and the PRAM to fix this issues. SMC stands for Resetting the System Management Controller and if there is a collision on the system management controller, your MacBook might not be worked properly. Also you can reset the SMC + PRAM whenever you have one of the following symptoms:
- USB port is not working properly.
- Battery is not charging properly.
- Battery life (status) is not correct.
- Battery is draining too fast (doesn’t last longer).
- Fan is not working properly. (Noisy – fan is spinning too fast or Overheating – Spinning too slow)
- MagSafe Power Adapter indicator light is not working.
- Screen brightness control is not working.
- HDMI port is not working properly.
NOTE:There are two different MacBooks. One with a removable battery, one with a built-in battery. Use the right method for your 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. Turn on your Macbook.
Resetting the SMC – A macbook with a battery you can’t remove by yourself. (Built-in battery)
Step 01. Make sure that your Macbook is completely turned off.
Step 02. Connect the MagSafe power adapter into your MacBook. If it’s already connected, leave as is.
Step 03. Press and Release Shift + Control + Option + Power keys at the same time.
Step 05. Press the power button to start your MacBook.
Resetting the RPAM (For All MacBook Laptops.)
Step 01. Turn off 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 or the second startup sound beeps (You will see the grey screen appears before it restarts.)
Step 05. You can release all keys when you heard second startup sound.
Step 06. If you hear the startup booting sound for the second time, that means the PRAM has been reset. Done!