How To: Fix when my MacBook Won't Turn On

If your Mac won't turn on

Rule out display issues

First, rule out the display as the source of the issue. To be sure you're not having a display issue, press your computer's power button. If your computer has power but doesn't have any video:

  • You may hear a startup chime.
  • You may hear fan or drive noise.
  • You may see a light from the Sleep LED (if your Mac has one).
  • Pressing the Caps Lock key on the keyboard causes it to light. 

If any of these things happen, see How To:  Fix a Black or Blank Screen on MacBook. Otherwise, continue with this article.

Power issues

After ruling out display issues, and if your computer won't turn on, try each of these steps.

  1. Verify you have a good connection from your Mac to the wall outlet by confirming the power cord and adapter are securely connected and plugged in. To check if the wall outlet is working, plug in a lamp or other electrical device
  2. If the wall outlet is working and you continue to have no power, try another power cord or adapter if available. If it works you may need a replacement cord or adapter. See How To: Troubleshoot Macbook Power, Chargers, Brick or Cord problems
  3. Disconnect all accessories that are plugged in to your computer. This includes things like printers, USB hubs, or mobile devices.
  4. Hold down the power button for ten seconds. Then, press the power button again to see if the computer turns on.
  5. Reset the SMC - See How To:  Reset the SMC.
  6. If you're still unable to start up your computer after trying each of these steps, visit the Help Desk.