Identify your MacBook Pro's charger. Plug the power adapter into a wall socket. Connect the USB-C cable into your power adapter (if it's not a MagSafe connection). Connect the USB-C end or MagSafe connection to your MacBook. The PRAM reset worked for my macbook pro 2011. I thought it was toast but once I performed the reset, it had me sign into my wifi. Then I went up to the apple icon in the top left and selected “start up disk” and found my HD and selected, restarted and boom, it’s up and working again. Assuming that your MacBook Pro is not physically damaged and you have been using it normally, if any of the USB ports becomes non-functional or non-responsive, it’s easy to bring it back to life. To fix a non-functional USB port, all you need to do is, reset System Management Controller (SMC) and Non-Volatile Random Access Memory (NVRAM) a.k. How To Factory Reset a MacBook Pro Step 1: Back everything up. Factory resetting means that your data will be wiped from your MacBook. As such, you’ll want. Step 2: Sign out of everything. It’s not strictly necessary to sign out of your apps, but you may want to do so out of. Step 3: Erase the. Hold down the Command and R keys on the keyboard and turn on the Mac. Let go when the Apple.

SMC, or the System Management Controller, is a system on a chip within Intel-based Macs that plays a role in controlling several hardware-related operations of Mac computers. It controls many different functions within the laptop, including certain things that affect USB port functionality.

Reset Usb Macbook Pro

Resetting the SMC should only be attempted after Steps 1 and 2.
For MacBook's with a removable battery (early 2009 and older)

  1. Press the icon in top left of screen
  2. Click Shutdown
  3. Disconnect the MagSafe power adapter from the computer
  4. Remove the battery
  5. Press and hold the power button for 5 seconds
  6. Release the power button
  7. Reconnect the battery and MagSafe power adapter
  8. Press the power button to turn on the computer

For MacBook's with a non-removable battery (mid 2009 and newer)

Reset Usb Macbook Pro

  1. Press the icon in top left of screen
  2. Click Shutdown
  3. Plug in the MagSafe or USB-C power adapter to a power source and to your computer.
  4. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
  5. Release all the keys and the power button at the same time.
  6. Press the power button to turn on the Mac laptop.

Mac computer's USB ports stopped working or not working at all, how to fix?

Today, Universal Serial Bus (USB) is one of the main connection interfaces available. USB is used extensively, from input devices (keyboard/mouse) to external storage and output devices (printers, speakers/headphones). As USB ports are used for a wide range of devices, an inactive port can become a major problem. First, ensure the problem is with the Mac USB ports - the easiest way is to try a few separate devices using the same connections.

Also, ensure that cables are in good working condition with no damaged, burnt spots. If other separate devices and cables do not work, this indicates a problem with the Mac USB port/s. This is a common problem, and not model specific. Therefore, you might encounter this frustrating situation on any Mac computer (MacBook, MacBook Pro, MacBook Air, iMac, Mac Mini, or Mac Pro). Although this may seem to be a hardware issue, a number of possible solutions are available without replacing the port or performing a fresh installation of mac OS. Firstly, you can try to reset a number of built-in controllers with the methods outlined below.

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Soft Reset Macbook Pro

Reset SMC to solve randomly-occurring USB port problem

If you are sure that the devices connected via USB are working properly, the ports are clean and connection is secure, you can try to reset the System Management Controller (SMC). SMC controls computer power consumption, battery charging and functionality, thermal and fan activity, GPU and video mode functionality/video output, sleep/wake modes and led lightning management, and other hardware functionality. To reset this controller on MacBook, MacBook Pro, and MacBook Air, begin by shutting down the computer and connecting a power adapter. Next, hold down a combination of the Shift, Control, Option, and Power keys for a few seconds and observe the power adapter light. When it blinks or changes color, release the key combination. Finally, boot the computer in the usual way by clicking the power button. After an SMC reset, the USB ports should work correctly. Test each one individually. Detailed information about how to reset System Management Controller on all Mac computers and common issues relating to SMC can be found in this article.

Reset

Reset NVRAM or PRAM on the Mac

If resetting SMC does not solve USB-related problems, try to reset the NVRAM/PRAM. The Parameter random-access memory (PRAM) and Non-Volatile random-access memory (NVRAM) stores information about various USB components, such as keyboards, mouse, trackpads, and others. Resetting these might solve USB problems. To reset NVRAM/PRAM on a Mac, first restart it. When the computer starts booting, hold down the combination of Command, Option, P, and R keys. Keep holding the combination until you hear the startup chime (additionally, the screen might flash). Release the buttons and let the system boot as usual. Once the computer has loaded completely, the USB ports should be working. Test each port with a number of separate devices.

Additional tips relating to USB port issues

Reset Macbook Pro Without Password

  • If just one port stops working properly while devices connected to other ports work, ensure the problematic port is clean and the connection is physically secure. If you are sure the port is in good condition and resetting the SMC and PRAM/NVRAM does not solve the issue, consider avoiding this port and use a USB hub connected to another functional port. Alternatively, launch Apple's built-in hardware diagnostic tools to check for hardware issues.
  • If the Apple computer has come into contact with any kind of liquid, immediately shut down the system and disconnect it from the power adapter. Clean and dry out the device to prevent any permanent damage. Remember, liquid can destroy computer components immediately or result in loss of hardware functionality, including USB.
  • If some USB devices work on your computer, whilst others do not, check the device's compatibility with the Apple product version to which you are connecting. Some devices require specific hardware drivers from the manufacturer to achieve full functionality or to work correctly (special use devices, modern scanners, etc.).
  • If there are any firmware and operating system updates available, install them. Updates are often released to fix various hardware and software bugs. To check available updates on Mac computers, launch the App Store application, select the Updates tab, and check for available updates. You are advised to create a backup of the hard disk before updating the operating system.