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Troubleshooting Mac startup

Posted On 2008-02-03 by FortyPoundHead
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Tags: Tip Mac OS X
Views: 1512


Having trouble starting up your Mac? Try these troubleshooting steps compiled from the Apple Support web site.

  1. Power on your Mac
    Make sure your Mac and (if applicable) monitor are powered on. Apple computers and external monitors typically have a round power button. Press the power button and look for visual (i.e. display) and audible (i.e. sound) indications that your Mac is powering up.

  2. Check your cables and connections
    Make sure all of your cables are firmly attached. Unplug the power adapter from the computer, plug it back in securely, and power on your Mac. If your Mac has a separate display, check all cables running from your Mac to its external monitor.

  3. Test your power source
    Make sure your power source is working.

    Test the electrical outlet you are using by plugging in another device, such as a lamp, and switching it on to see if it works. If you are using a power strip, make sure that it is switched on. If you are running a portable Mac from its battery, try plugging in your Mac to an electrical outlet.

  4. Check your power cord
    If you have an extra power cord that is compatible with your Mac, try using it in place of the one you have been using.

  5. Check all new hardware installations and devices
    If you just installed new hardware, such as RAM or an AirPort card, check to make sure your new hardware is properly seated by removing it and then reseating it. If you have added a new devices such as an external drive or printer, disconnect all of your external devices and then try turning on your computer again. If your Mac starts up after disconnecting your devices, identify which device is causing the issue by connecting a device, restarting your computer, and testing it before connecting the next device.

  6. Restart your Mac

Restart your Mac by using each of the following:
  1. Force Quit (Option-Command-Escape)

  2. Restart (Control-Command-Power)

  3. Force Shut Down (press the power button for 10 seconds)


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