6 Replies Latest reply: Feb 20, 2013 4:13 PM by rkaufmann87
jon290 Level 1 (0 points)

Hello, my iMac has crashed twice now after installing new RAM.

 

The first panic report: http://pastebin.com/raw.php?i=ucxjEfbR

The second panic report: http://pastebin.com/raw.php?i=HGNWgzxb

 

The most recent panic attack happened overnight, so I'm not sure what was happening on my machine. I had Notes, Messages, Chrome and 1Password open at the time I think (based on what restarted).


iMac (27-inch, Late 2012), OS X Mountain Lion (10.8.2), Recently installed 32GB RAM
  • rkaufmann87 Level 9 (55,288 points)

    The chances are good the issue is related to your new RAM. This can be caused by 1 of 3 issues with RAM:

     

    1. Incorrect RAM, iMacs are fussy  so be positive you install the correct RAM.
    2. Failed RAM, yes RAM can a does fail.
    3. Unseated RAM, remove and reseat.

     

    Going forward please post the actual KP Logs, not links to them as they are not always viewable.

  • jon290 Level 1 (0 points)

    Thanks for replying rkaufmann87.

     

    1. When purchasing the RAM I verified that it was compatible and intended for the late 2012 model iMacs.
    2. How could I know if my RAM was bad or failed? About This Mac -> More Info... -> System Report -> Hardware -> Memory reports each slot as a status of 'OK'. Is there a better way to verify the RAM?
    3. Would unseated RAM still show up as 'OK' or present in the system info as being installed?
  • baltwo Level 9 (62,215 points)

    Run the Apple Hardware Test program, extended tests, at least twice, followed by Rember.

  • rkaufmann87 Level 9 (55,288 points)

    jon290 wrote:

     

    Thanks for replying rkaufmann87.

     

    1. When purchasing the RAM I verified that it was compatible and intended for the late 2012 model iMacs.
    2. How could I know if my RAM was bad or failed? About This Mac -> More Info... -> System Report -> Hardware -> Memory reports each slot as a status of 'OK'. Is there a better way to verify the RAM?
    3. Would unseated RAM still show up as 'OK' or present in the system info as being installed?

    I am assuming this is for a late 2012 27" iMac, the only late 2012 IMac's with user upgradeable RAM. If that is correct please post the exact specifications including the RAM model and manufactuer you bought so we can verify it's correct.

  • rkaufmann87 Level 9 (55,288 points)

    jon290 wrote:

     

    Thanks for replying rkaufmann87.

     

    1. When purchasing the RAM I verified that it was compatible and intended for the late 2012 model iMacs.
    2. How could I know if my RAM was bad or failed? About This Mac -> More Info... -> System Report -> Hardware -> Memory reports each slot as a status of 'OK'. Is there a better way to verify the RAM?
    3. Would unseated RAM still show up as 'OK' or present in the system info as being installed?
    1. Please provide the exact make, model and specifications of the RAM you purchased so we can verify it's correct. Also provide where you bought it.
    2. Refer to Baltwo's suggestion above.
    3. Unseated RAM can show up if it's partially seated, testing it is extremely simple, remove and reinstall and press it in firmly.