macbook shuts down if not plugged to the wall

Discussion in 'Mac Basics and Help' started by sophisaur, Oct 4, 2006.

  1. sophisaur macrumors member

    sophisaur

    Joined:
    Jun 24, 2006
    #1
    my macbook just started doing this today:
    -shuts down immediately if unplugged
    -won't start up
    -battery lights aren't on
    -coconut battery says that current charge is 100% and battery capacity is 78%
    -coconut also says charger is connected but battery is not charging
    -icon on menubar says battery is charged, and the charger light is green

    help! i need to bring this notebook to class today and i'm so stressed out :confused:
     
  2. gauchogolfer macrumors 603

    gauchogolfer

    Joined:
    Jan 28, 2005
    Location:
    American Riviera
    #2
    Try resetting the Power Management Unit (PMU) : link
     
  3. 2nyRiggz macrumors 603

    2nyRiggz

    Joined:
    Aug 20, 2005
    Location:
    Thank you Jah...I'm so Blessed
    #3
    Also try taking the battery out of the laptop and placing it back. How often do you calibrate?



    Bless
     
  4. sophisaur thread starter macrumors member

    sophisaur

    Joined:
    Jun 24, 2006
    #4
    gaucho:
    is that link relevant to macbooks?

    and i haven't ever calibrated.. :/
     
  5. gauchogolfer macrumors 603

    gauchogolfer

    Joined:
    Jan 28, 2005
    Location:
    American Riviera
    #5
    Yes, I believe the process to reset the PMU is the same for the Macbooks (updated link). How long have you had your Macbook? You might not have reached your monthly calibration point :)
     
  6. Jovian9 macrumors 68000

    Jovian9

    Joined:
    Feb 19, 2003
    Location:
    Planet Zebes
    #6
    If resetting the PMU and removing/replacing the battery doesn't work it may be that either your battery is faulty or your logic board is faulty. Normally they will send you a new battery (with credit card deposit....once they receive the old battery back in the mail they will not charge you for the new one).....and if that doesn't work you'd probably have to get it repaired.
     
  7. sophisaur thread starter macrumors member

    sophisaur

    Joined:
    Jun 24, 2006
    #7
    aw, that would be a huge inconvenience considering how my notebook is almost mandatory for class. thank you anyway, i'll have my school's apple store put in a work order.

    could it possibly be anything else? my laptop is about 4 months old and the battery's fine according to coconut battery. it makes a whizzing sound (HD?) when i unplug and then shuts down :/
     
  8. Mumford macrumors regular

    Joined:
    Oct 8, 2006
    Location:
    Altadena, CA
    #8
    I had the same problem. It turned out to be the battery. My MBP would say the battery was at 100%, but within a few seconds of unplugging it would power-off. Apple replaced the battery, and that fixed it.
     
  9. ca6asm Guest

    Joined:
    Oct 8, 2006
    #9
    I had this problem and have just returned my macbook back to apple for repair after doing all the tests suggested.
     
  10. applemacdude macrumors 68040

    applemacdude

    Joined:
    Mar 26, 2001
    Location:
    Over The Rainbow

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