Kernel panic + apple hardware test error - 4MEM/9/4000000: 0xb92e1b98

Discussion in 'iMac' started by discofuel, Jan 18, 2012.

  1. discofuel macrumors 6502

    Feb 21, 2010
    I have been getting kernel panic errors so I ran the Apple hardware test and it gave me the following error:

    4MEM/9/4000000: 0xb92e1b98

    I googled the error and it seems to be pointing to bad ram? I upgraded my iMac with another 8 gigs of RAM about 6 months ago and had no problems until recently.

    How can I find out what the problem is?

    And if it is RAM, how can I find out which RAM chip is the faulty one?



    I should add that Techtool pro is not reporting any ram problems
  2. velocityg4 macrumors 601


    Dec 19, 2004
    Take one module out and see if everything is fine on the one module if not swap them. Also alternate the slots. If it works fine on only one of the modules you found your culprit.
  3. discofuel thread starter macrumors 6502

    Feb 21, 2010
    Thanks. I took the two Crucial 4GB modules I upgraded my mac with and replaced with some old stock chips I had from my MBP.

    Ran the hardware test and no problems.

    Crucial are replacing both the modules, as I bought them as a set, under Crucial's lifetime warranty.

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