While technology has solved many of our problems and made life far easier than anyone could have ever imagined, technology itself, is not free of problems. In order words, your Mac, iPhone, and other devices aren’t perfect and can experience technical problems.

In the case of your Mac, most problems can be solved by resetting your System Management Controller, SMC, for short. The SMC is a piece of hardware on your Mac’s motherboard, which controls a large number of core functions on your Mac.

The SMC was created to prevent the processor of your Mac from having to take care of simple hardware functions. Since the SMC takes care of many rudimentary tasks on your device, it comes as no surprise that by resetting it you can solve many of the problems your Mac experiences.

When Should You Reset Your Mac’s SMC

Resetting your SMC may not fix your particular problem, so it’s worth knowing when you should try to reset your SMC. See the points below for further details.

  • When your Mac doesn’t wake from or enter Sleep Mode at your will.
  • When your Mac enters Sleep Mode without warning.
  • When your Mac doesn’t respond to the Power button being pressed.
  • When your USB ports stop working.
  • When your battery doesn’t charge or takes too long to charge.
  • When your Mac doesn’t respond to the lid opening and closing.
  • When you Mac performs slower than usual.
  • When Bluetooth stops working.
  • When your Mac’s fans run too fast.
  • When the icons on your Dock bounce without you launching the application.
  • When your display backlight doesn’t respond to ambient light level changes.
  • When your Wi-Fi hardware is reported as missing or isn’t working.
  • When Target Display Mode stops working properly.
  • When your Power indicator stops displaying or displays incorrectly.

Though resetting the SMC is known to solve many problems on your Mac, it’s best to try out simple solutions first. These solutions tend to not only be effective, but also don’t take any time to carry out. Try to close all of your applications and Restart your computer. If this doesn’t resolve your particular problem, then try resetting your SMC. Use the instructions below and be sure to take note of your Mac model, before you begin following any of the methods below.

How to Reset the SMC on Your Mac

The process to reset your SMC depends on the type of Mac in your possession. However, all SMC methods require that you shut off your Mac first. In order to get started and reset your SMC, follow the instructions below.

Reset SMC on Mac’s with User Removable Batteries:

1. Shut down your Mac. If you’re unable to shut it down, press and hold the Power button until the Mac shuts down.

2. Remove the battery.

3. Press and hold the Power button for at least give seconds.

4. Reinstall your Mac’s battery.

5. Turn on your Mac.

Reset SMC on Mac’s Without User Removable Batteries:

1. Shut down your Mac. If you’re unable to shut it down, press and hold the Power button until the Mac shuts down.

2. On the Mac’s built-in keyboard, press and hold the left Shift, control, and option key, while pressing the Power button for at least 10 seconds. If you have a newer model Mac, your Touch ID will suffice as the Power button.

3. Use the Power button to turn on your Mac.

Reset SMC on Mac Desktops (iMac, Mac mini, Mac Pro):

1. Shut down your Mac.

2. Ensure that the power cord is unplugged.

3. Wait at least 15 seconds.

4. Reconnect your Mac’s power cord.

5. Wait at least 5 seconds.

6. Now start you Mac using the Power button.

Restart Mac Desktops and Notebooks with Apple T2 Chip:

1. Shut down your Mac.

2. Press and hold your Power button for at least 10 seconds.

3. After releasing the Power button, wait at least 10 seconds.

4. Press the Power button and turn on your Mac.

After you’ve reset the SMC on your Mac, it should be performing as usual, with the problem you were experiencing, resolved. However, if you find that the problem is still persisting, you might want to try a PRAM reset. PRAM stands for parameter random access memory and stores the system settings on your Mac.

If your problem still isn’t solved, you should avoid tinkering with your Mac too much, especially if you’re still under warranty. Not only could you damage your system further, but you may also end up annulling your warranty. It’s best to take your Mac to the nearest Apple Store and have an Apple employee inspect your device. If you’re a member of Apple Care or have a warranty in effect, it’s likely that you won’t have to pay for repairs or replacements.