iMac problem

Discussion in 'Mac Basics and Help' started by Macsick, Jan 25, 2009.

  1. Macsick macrumors newbie

    Joined:
    Jan 25, 2009
    #1
    My iMac won't start...got an error message as follows:

    4MEM/1/40000000:OBC9CO98 When I reran the test the last two numbers changed to 58
     
  2. clawanhex macrumors member

    Joined:
    Oct 18, 2008
    #2
    This appears to be a RAM (memory) error. Have you installed any new RAM recently? If you have, try swapping the module configurations around and repeat the test. It sounds like one of the modules is defective. Once you've found it, get rid of it: whether this means returning it to the manufacturer for a refund, or just binning it - 'cos it is kaput.

    If you haven't installed any new RAM, take it to an Apple Store - they'll know what to do, but it ain't your fault.
     

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