Ram / Logic board / Hardware problems?

Discussion in 'MacBook Pro' started by mactavish2k8, Jan 31, 2012.

  1. mactavish2k8 macrumors newbie

    Joined:
    Jan 31, 2012
    #1
    Hey guys,

    I'm having trouble pinpointing why my browsers and itunes all crash at random intervals.

    I've used safari, firefox and chrome and they all crash so often. e.g. I click on firefox it launches and crashes. Doesn't go away until I try again perhaps 30 mins later.
    My chrome individual tabs have been crashing as well.

    I did a complete reinstallation twice with snow leopard / lion but neither fresh start works. Often the crashes will occur more frequently with time.

    All my symptoms fit perfectly with bad ram. However I cannot prove bad ram because I pass both the memtest86 and apple hardware test extended loop more than 3 times for each.

    I'm lost between deciding if there's a memory failure or logic board failure. What do you guys think?
     
  2. mfram macrumors 65816

    Joined:
    Jan 23, 2010
    Location:
    San Diego, CA USA
    #2
    Maybe try to take out and re-seat the RAM. See if things improve. Or maybe get more RAM and upgrade and see if the problem goes away. RAM is pretty cheap. Memory test programs rarely show problems. If they say the RAM is bad, it probably is. If it says the RAM is good, it doesn't mean much.
     
  3. ibuyufo macrumors 6502

    Joined:
    Sep 22, 2007
  4. mactavish2k8 thread starter macrumors newbie

    Joined:
    Jan 31, 2012
    #4
    Current ram is maxed out in 2 x 2GB configuration.

    Haven't found any problems with the hard drives. I've swapped 2 different hard drives (for reasons unrelated to the problem) and I'm still facing the same issue.

    I used to get kernal panics very often as well but it kind of faded away. Currently so used to facing different problems / crashing I no longer attempt to find fix for them and they just come and go.

    Very keen to fix the problem before June this year as that's when my applecare expires.
     
  5. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #5
    You forgot to mention basic yet essential information. What model do you have, what year and what version of OS X are you running?
     
  6. mactavish2k8 thread starter macrumors newbie

    Joined:
    Jan 31, 2012
    #6
    Sorry about that

    Macbook Pro 5.5 Mid-2009
    13"
    Core 2 Duo 2.26GHZ
    2 x 2GB DDR3 Ram
    Western Digital Scorpio Blue 500GB 5400RPM

    Using OS X Lion 10.7.2
     
  7. mactavish2k8 thread starter macrumors newbie

    Joined:
    Jan 31, 2012
    #7
    I've gone with my hunch so far and swapped out the RAM.

    Appears that the problem has gone away for now and fingers crossed that it stays that way.

    If the problem persists (random apps crashing continously) I can only think of logic board failure.
    If you guys have any alternative suggestions on what could be wrong I'll be very happy to test them out.

    ----------

    I guess one of the learning points I had from this experience was that sometimes all the different tests can't show all the defective parts. Just got to hunch it at times.
     

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