OS X Mavericks: If the sleep indicator light flashes

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If the sleep indicator light flashes

It’s normal for your portable computer’s sleep indicator light to slowly pulse (brighten and dim) when your computer is in sleep. If the sleep indicator light flashes (turns completely on and off repeatedly), the computer may need service.

  • If you hear beeps when your Mac starts up instead of the normal startup tone, and the sleep indicator light flashes, the Mac may need service.

    If you hear beeps when your computer starts up

  • If you don’t hear beeps, but the sleep indicator light flashes five times when you start up your Mac or wake it from sleep, your Mac may need to be serviced.

    You can continue using your Mac before it’s serviced. Use a different battery, or connect the power adapter and plug it into a power source.

    Important: If your Mac has a faulty battery or no battery and then your Mac is unplugged, you could lose all unsaved changes.
Last Modified: Oct 20, 2015
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