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    Macbook Pro 15" screen doesn't turn on

    Discussion in 'Apple and Mac OS X' started by JAMM0N, Apr 5, 2012.

  1. JAMM0N

    JAMM0N Notebook Consultant

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    hey guys so i am fixing my cousins laptop.

    @ first he was complaining the computer was slow well checked out his hdd it makes a lot of noise for a mechanical drive but i check the SMART and it reported it ok. so maybe he needs more ram or something who knows figure it out later.

    anyways the 2nd problem is the screen wont turn on boot. the computer turns on but the screen is blank. i know that its working fine because we got to that screen before but now i cant get to it. anyone have any ideas?

    i'll open it again tonight and see if i fergot to plug a ribbon in but if anyone has any idea cool. also computer doesn't wake up on sleep so we got 3 problems to figure out. now direct me!
     
    JAMM0N, Apr 5, 2012
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  2. ygohome

    ygohome Notebook Deity

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    is the sleep light on the front edge of the unibody case on or pulsing? It might be in sleep mode.
     
    ygohome, Apr 6, 2012
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  3. JAMM0N

    JAMM0N Notebook Consultant

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    it pulses but then when i try to turn it on again it doesn't seem to wake up. i have to restart it in order to work.

    the thing is i really think its the screen. he just needs to format his OS again is all and if it continues to stutter i would just buy it from him and fix it myself so he has something to work with instead of having to deal with it.
     
    JAMM0N, Apr 6, 2012
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  4. ygohome

    ygohome Notebook Deity

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    I had this problem too.

    There is an apple thread about it.

    https://discussions.apple.com/message/15774163#15774163

    You could probably disregard the OP solutions as that did not fix my problem. THe solution for me was found on page 2 of that thread. I had to uninstall a bogus printer assignment that was somehow preventing my mbp from waking up from sleep after I opened the lid.

    FYI, I could always press F1 once (to reduce backlighting brightness) and that would always wake up my mbp. See if that does anything first.
     
    ygohome, Apr 6, 2012
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  5. Mobius 1

    Mobius 1 Notebook Nobel Laureate

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    Ah, a similar problem to my mac too.

    This is caused by the computer being moved before it can write all of it's ram data to the hdd. The sudden movement triggers the hdd to lock up (fail-safe feature).

    The solution is

    1. Wait for the light to completely pulse before moving the laptop
    2. Get an ssd

    OR the best solution
    type this in terminal


    "sudo pmset -a hibernatemode 0"

    then (recover lost hdd space [ram image])


    "cd /var/vm"

    press enter

    "sudo rm sleepimage"




    enter password when asked



    good luck!
     
    Mobius 1, Apr 7, 2012
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  6. JAMM0N

    JAMM0N Notebook Consultant

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    Bad inverter maybe?
     
    JAMM0N, Apr 9, 2012
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