iMac freezing and rebooting itself

Discussion in 'iMac' started by eternalife, Apr 11, 2015.

  1. eternalife macrumors regular

    Jul 21, 2011
    I have an early 2013 iMac (1st gen of new design) that freezes and reboots itself about once a day. I can't pinpoint a consistent usage when it happens but I would say most frequently when either watching Netflix or using FCP X. Sometimes it will do it with simple things like browsing or using Adobe Lightroom.

    I've run the extensive hardware tests and found nothing. I've run memory tests and found nothing. This never happened before the Yosemite upgrade - although that could be a coincidence.

    Any clues? Anyone else seeing similar behavior?
  2. Hirakata macrumors 6502


    Mar 17, 2011
    Burbank, CA
    I know you've run memory tests, but it sounds like bad RAM. Try running this:

    It's found RAM issues for me others haven't.
  3. eternalife thread starter macrumors regular

    Jul 21, 2011
  4. old-wiz macrumors G3

    Mar 26, 2008
    West Suburban Boston Ma
    Have you added or replaced the original RAM? new ram can pass tests but fail when actually using.

    Otherwise get a copy of the console log so we could trace back to who called it.
  5. eternalife thread starter macrumors regular

    Jul 21, 2011
    No. It has the original RAM - it's the 21" version.

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