Skip navigation

My second monitor is not working.

642 Views 1 Reply Latest reply: Aug 13, 2013 7:15 AM by sterling r RSS
OutlawLeather Calculating status...
Currently Being Moderated
Aug 10, 2013 10:39 PM

My second monitor is not working and I have rest the PRAM- no luck. Any suggestions?

iMac, iOS 6.1.4
  • sterling r Community Specialists Community Specialists (3,425 points)
    Currently Being Moderated
    Aug 13, 2013 7:15 AM (in response to OutlawLeather)

    Hello OutlawLeather,

     

    Thank you for using Apple Support Communities!

     

    I would recommend the troubleshooting oulined here If you are unable to access or play content while connected to a Wi-Fi network. You can find the article at http://support.apple.com/kb/ht1573.

     

    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 resolutionStart 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.

     

    I know you have reset the PRAM already so you can skip that, or try it again when the time comes if you like.

    All the very best,

    Sterling

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.