maryflores
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Q: MacBook Pro. Flickering!

My MacBook Pro. Retina display keeps flickering from gray then back again. Sometimes  it doesn't flicker for a long time then all of a sudden it starts to flicker again....Using Macbook Pro.10.9.4 with a 2.6 GHz Intel core i7 Processor, 16GB 1600 MHz DDR3 Memory, with retina display mid 2012...

Please Help!!!   Thank You...          

MacBook Pro with Retina display, OS X Mavericks (10.9.4)

Posted on Sep 23, 2014 2:10 PM

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maryflores

Q: MacBook Pro. Flickering!

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  • by alex_h1,

    alex_h1 alex_h1 Sep 26, 2014 6:11 AM in response to maryflores
    Community Specialists
    Sep 26, 2014 6:11 AM in response to maryflores

    Hello maryflores,

     

    Thanks for using Apple Support Communities.

     

    To troubleshoot issues with flickering on your Mac's display please follow the steps below.

     

    No video or no signal, image distortion, "snow," or flickering

    Check connections

    When using an external display be sure to check the following:

    1. If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
    2. Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
    3. Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
    4. Try unplugging the video adapter or cable and then plug it back in.
    5. If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
      • Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
    6. If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).

    Reset the system

    You can reset the Mac's parameter RAM and SMC.

    Reset the resolution

    Start by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:

    1. Start up in Safe Mode.
    2. From the Apple () menu, choose System Preferences.
    3. Choose Displays from the View menu to open the preferences pane.
    4. Select any resolution and refresh rate that your display supports.
    5. Restart your computer.

     

     

    Apple computers: Troubleshooting issues with video on internal or external displays

     

    Take care,

    Alex H.