MP 2.8 Crash, memory related

Discussion in 'Mac Pro' started by ZMacintosh, Feb 14, 2009.

  1. ZMacintosh macrumors 65816


    Nov 13, 2008
    I recently had one crash with my 2.8 MP today, and twice today where the memory lights on the risers were out and only indicating 2GB ofmemory.

    i have 6gb of memory in my machine, 2x1gb from apple and 2x2gb from OWC
    (**sorry corrected my mistake, 2x2gb not 2x4)

    i had spare memory i know wi installed the memory over 6months ago with no issues, wen through all the memory tests and hardware tests for a few days when i first installed it,
    today i recently took out all my components to do some monthly cleaning since there was built up dust and thats when i started getting all these crashes, i reseated the memory and the riser cards (the 2x2 is on riser A and the 2x1 is on riser B as it has been)

    and ever i replaced the drives and memory thats when i started getting the memory not being recognized.
    i know there is nothing wrong with the memorya s i ran some thorough tests on it today aswell, is there a way to determine what caused it to randomly crash?

  2. UltraNEO* macrumors 601


    Jun 16, 2007
    Er... Usually, if it's a memory fault.
    The lights one the risers should light up.
  3. JG271 macrumors 6502a


    Dec 17, 2007
    Its just incorrectly re-seated ram - the ram wasn't connecting right to the board... which is why it crashed. If it isn't that then it could be a faulty module or two, If not then you MAY have a faulty ram slot or even riser. But most likely the first one.
  4. ZMacintosh thread starter macrumors 65816


    Nov 13, 2008
    thank you all for the responses.

    yeah im running some over night tests again with Rember, did a few AHT passes just for pre-test.

    restarted into Windows and OSX and it all showed up fine, ran some stress test with some apps.

    I think it had to do with reseating, probably wasnt pushed down all the way.
    it happened before prior with my first gen macpro aswell randomly.

    hm, ill keep a look out, since this is the first time ive ever encountered an issue with this machine had it for almost a year =)

    i appreciate the help!

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