sleep indicator blinking 3x, MBP wont start

Discussion in 'MacBook Pro' started by Twe Foju, May 6, 2008.

  1. Twe Foju macrumors 6502

    Twe Foju

    Joined:
    Dec 20, 2007
    Location:
    Jakarta
    #1
    what seems to be the problem?

    so it happened around 1 month ago

    normal usage, never did anything, but sometimes when turning on the MBP, the latch light keep blinking 3x and the display stops before the apple logo usually appears

    anyone know why the light continuously blink 3x??

    so i had to restart by pressing + hold down the power button

    and try to open the MBP again, usually the 2nd try will work, but sometimes it need around 4 times, what seems to be the crap here?

    thanks =)
     
  2. chas0001 macrumors 6502a

    chas0001

    Joined:
    Sep 18, 2006
    Location:
    Alicante, SPAIN
    #2
    Have you installed any third party RAM recently? Bad RAM can cause this problem. If you have put the old RAM back in to see if the problem persists.
     
  3. Twe Foju thread starter macrumors 6502

    Twe Foju

    Joined:
    Dec 20, 2007
    Location:
    Jakarta
    #3
    yo, thanks for the reply

    no i havent done anything drastic, just a normal usage everyday, playing WOW, browsing, and MSN, that's it

    i upgraded my RAM when i bought this machine ( im using Mushkin 2x2g)

    and it never have any problem until recently ( if this is the cause of the RAM, otherwise my RAM does not have any problem )

    so is this RAM problem? if it is, why it only happens once in a while and not every time i start my MBP?

    thanks
     
  4. chas0001 macrumors 6502a

    chas0001

    Joined:
    Sep 18, 2006
    Location:
    Alicante, SPAIN
    #4
    It could be that when it fails the OS is trying to access a piece of the bad ram when running a particular piece of code. RAM can go bad over time.

    Try booting from the OS X Install DVD and performing a Hardware Test (hold down the D key when booting). It should allow you to do an extensive test of the RAM. If you still have the old Apple RAM shove it in and see if the problem arises again. If it does not then get the new ram replaced, it should be under warranty. Good Luck.
     
  5. e12a macrumors 68000

    e12a

    Joined:
    Oct 28, 2006
    #5
    Try reseating the RAM, or buy new RAM.

    3 flashes = "marginal" RAM.
     
  6. GoxKok macrumors member

    GoxKok

    Joined:
    Apr 23, 2007
    #6
    This happened to me.

    When I bought 4GB of RAM the problem went away.

    Guessing, like other here, I got bad RAM from Apple.

    Apple....not only 700 $ RAM, but also nonfunctional! Whoo! :eek:
     
  7. Twe Foju thread starter macrumors 6502

    Twe Foju

    Joined:
    Dec 20, 2007
    Location:
    Jakarta
    #7
    ok so this means something is wrong with my Mushkin RAM

    thanks though

    oh and about the Original Apple RAM, apparently i sold em :D

    but at least now i know its my RAM that causes the 3 flashes and i will change them soon

    thanks again for the help

    i will try to perform the Hardware test tomorrow and ill post again if something is wrong
     
  8. chas0001 macrumors 6502a

    chas0001

    Joined:
    Sep 18, 2006
    Location:
    Alicante, SPAIN
    #8
    Thats a shame you sold them but I dont blame you.

    To check which of the 2 RAM chips maybe faulty remove one (so you have only 2GB) and test the laptop, then remove it and try it with the other single chip in.
     

Share This Page