Diagnostic test won't work....

Discussion in 'iMac' started by Nothingfaced, Sep 10, 2014.

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  1. Nothingfaced, Sep 10, 2014

    Nothingfaced macrumors member

    Joined:
    Aug 15, 2014
    #1
    my imac is having an issue with the screen blacking out randomly, and I have tried to run the diagnostic test but it doesn't work.

    I'll reboot, hold "D", and it simply takes a lot longer than normal to boot up to my regular login menu. No diagnostic test to be found.

    What am I doing wrong?
     
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  2. Weaselboy, Sep 10, 2014

    Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #2
    What year model is your iMac. How the test is run varies my age. Give this a look.
     
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