MacBook not turning on

Discussion in 'Mac Basics and Help' started by junka666, Jan 5, 2010.

  1. junka666 macrumors newbie

    Joined:
    Jan 5, 2010
    #1
    Hello,
    My MacBook is not turning on. When I click the power button, nothing happens. The little oval-ish light on the front of the laptop is lit. I have heard the "wee-oo-wee" turning-on noise twice, but nothing happens.
    My charger is firmly connected to a good outlet, and the light on the charger is lit up green. It's possible that this could be a problem with my screen.

    EDIT: I'd like to add that it was working 5-6 hours ago, and I don't believe anything major has happened since then.

    Thank you,
    Junka
     
  2. junka666 thread starter macrumors newbie

    Joined:
    Jan 5, 2010
    #3
    I'd like to add that it was working 5-6 hours ago, and I don't believe anything major has happened since then.
     
  3. ergdegdeg Moderator emeritus

    ergdegdeg

    Joined:
    Oct 13, 2007
    #4
    I think I've had the same problem just two days ago for the second time. What has helped (as a work-around) is resetting the PMU (take out battery, disconnect power cord, hold power button for 5-10 seconds, reconnect everything) and then wait for a few hours. It will work again (at least it did the two times this has happened to me). It will not work again right away so don't freak out.

    Yesterday, I took my MBP to the Apple Store and they said all the hardware is intact so I don't have the slightest clue what could be wrong.
     
  4. junka666 thread starter macrumors newbie

    Joined:
    Jan 5, 2010
    #5
    Okay I'll try that. Should I reconnect the power after I press the power button?
     
  5. Dan73 macrumors 6502a

    Joined:
    Jul 30, 2009
    #6
    It would still attempt to boot up even if so.
     
  6. flopticalcube macrumors G4

    flopticalcube

    Joined:
    Sep 7, 2006
    Location:
    In the velcro closure of America's Hat
    #7
    It is turning on. Only the screen remains dark.

     
  7. Mumford macrumors regular

    Joined:
    Oct 8, 2006
    Location:
    Altadena, CA
    #8
    Try holding down the power button for > 4 seconds.
     
  8. junka666 thread starter macrumors newbie

    Joined:
    Jan 5, 2010
    #9
    I've heard more of the "wee-oo-wee" sounds and also the sound of it shutting off, multiple times. But the screen still remains dark.
     
  9. chill. macrumors 6502

    Joined:
    Sep 1, 2008
  10. dayneoram macrumors member

    Joined:
    May 30, 2008
    #11

    <y initial thought was "Is it the brightness"?
    because it is possible to turn the brightness so far down that the computer screen appears off... Sorry if that's a dumb idea but i suppose its possible...
     
  11. Maui macrumors 6502a

    Maui

    Joined:
    May 18, 2007
    #12
    Try these:

    1. Reset the PRAM, both with and without the battery.

    2. Reset the SMC.

    3. If you have one, plug in an external monitor -- same issue? Be sure brightness it turned up (hit the key a bunch of times). Shine a flashlight at the screen -- can you see your desktop? If so, it's probably a hardware problem.

    And, just to confirm, this is a MacBook not a Pro, right? If it's a Pro, read here.
     

Share This Page