Macbook Pro goes into sleep mode randomly

I have a Macbook Pro, early 2011 version running Mountain Lion. Sometimes, it doesnt matter  what I am doing but it will be running fine and then out of no where the screen will go black. I assume it goes to sleep because the sleep light goes on. It take a couple minitues for it to "wake up," more than from a usual sleep. Is there something wrong with my computer? Is there a quick fix for it? Any help would be appreciated. Thanks

Power or other problems related to unexpected system sleep, shutdown, lights or fans call for an SMC reset:
Resetting the SMC on portables with a battery you should not remove on your own
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.

Similar Messages

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    It sounds obvious but are you sure your power adapter is ok and the battery is charged. The behaviour sounds a lot like low battery sleep.
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    Hello Tuscaloosacat,
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    For more information, take a look at:
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    http://support.apple.com/kb/HT1776
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    Then I thought it may be a problem with Lion so I upgraded to Mountain Lion. The issue still persisted. Tried resetting SMC and NVRAM, did not resolve issue.
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    Now to find out WHY it does it at home only. How hot is it at home? Have you checked the AC current/voltage at home?
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    I normally only have speakers set up to my computer and a wired keyboard. The speakers are powered separately. I would assume that at the Apple Store only the power cord and wired keyboard are connected.
    What is the Power Supply Position? And what does it do?
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  • My macbook boots up and only stays on for 30sec and goes into sleep mode

    My macbook boots up and only stays on for 30sec and goes into sleep mode! Any suggestions as to why this might be happening? Thanks....

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  • My laptop randomly goes into sleep mode

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    Do not just rely on a recovery point!
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  • My iPad randomly goes into sleep mode while I am using it?

    All of a sudden, when ever I use my iPad 2 it goes into sleep mode. It did it three times while I typed this message.  As I am running an app it will just go into sleep mode with out me doing so and I have to press the home button to wake it up. Doesn't matter what app I am running. I have 4gb of storage available.  Most of the time it brings me back to the app I was using when it went to sleep.  Has anyone else suffered this issue. I am running the latest iOS 6.0. 

    What "issue"? This is perfectly normal. By default, all (fairly-recent) Apple products will go to sleep if left idle for a certain period of time. This is NOT normal, however, if in the app, you are pressing buttons on the screen. If you are doing something like reading, for example, try setting your iPad to not go to sleep that quickly.
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  • MacBook goes into Sleep Mode w/o me telling it to

    An iPod-like image pops onto my screen with "Zzzz" coming out of it. Then my computer goes into sleep mode.
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    Got the exact same problem here - I have it plugged into power and my on-power setting says "never sleep" and yet keeps trying to go to sleep (actually I think it is shutdown) when I leave it alone for a hour or two. Most of the time I have stuff running that it can't close automatically so I come back to a window full off dialogs asking for quit confirmation.
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  • Why does my macbook pro "goes to sleep" when charging?

    Why does my macbook pro "goes to sleep" when charging? It is working fine without charging but once I attach the charger to my laptop, it just blacks out or goes to sleep mode and I can't wake it up unless I unpluck the charger.
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    Try an SMC reset. Follow the method for "a battery you should not remove yourself."
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  • My macbook pro goes to sleep by it does not wake up. I have to restart it. I had recently to change the board in the attached Thunderbolt display.

    my macbook pro goes to sleep by it does not wake up afterwards. I have to restart it. I had recently to change the board in the attached Thunderbolt display, because I noticed that the same problem arose when the display was attached.
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    Hello Aminetti,
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    http://support.apple.com/kb/TS5357
    Reset SMC
    Reset NVRAM/PRAM
    Test with external devices disconnected
    Try Safe Mode
    Try another user account
    Thank you for using Apple Support Communities.
    All the best,
    Sterling

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