Previous 1 2 Next 15 Replies Latest reply: Jan 7, 2011 3:45 PM by Jay Bullock
Alex Predko Level 1 Level 1 (0 points)
Hi everyone,
my macbook has recently started shutting down randomly. It never used to do this. One minute im on it and then the next minute it goes completely blank and turns off. When it turns of a tick noise is heard. It never used to do this and its really anoying me. After it turns off, I cant turn it back on normally, i have to unplug the charge, take out the battery, put it back in, put the charger back in, turn it on. The only thing i can think of is that its doing this because it might be getting too hot, but then it would have done this before right? It gets warm but not THAT hot, so can someone help me?
thanks

Mac OS X (10.5.8), 2.1 GHz Intel Core 2 duo processor. 1GB 667 MHz DDR2 SDRAM.
  • Leojackson Level 1 Level 1 (0 points)
    Hello~ Alex
    I have the same situation just like yours recently. It happened last 3 times in last 2 weeks, both on off charge. There have anyone can help us? Thanks a lot.
  • Trizzy_Trey_Rogers Level 1 Level 1 (5 points)
    Hello Alex and Leo,

    I seen both of your posts and wanted to recommmend a couple of troubleshooting steps that the applecare techs may have you do, like resetting the "System Managment Controller" (SMC) and verifying/repairing your disk permissions and hard disk through the disk utility.I posted a link at the end of this reply that might help the problems your having with your systems. Before trying these steps you need to verify if your able to remove the batteries from your macbooks or not because the steps are different for laptops in which the battery can be removed and cannot be removed.

    http://support.apple.com/kb/HT3964

    Please let me know if this does help or not, if it doesn't i will be happy to post the other link for the next step if needed.

    TrizzyTreyRogers

    AppleCare Advisor Tier I
  • Alex Predko Level 1 Level 1 (0 points)
    Thanks for replying,

    Before i try this SMC reset, is this going to affect my computer in anyway? (eg. whipe the memory off it, slow down, or any other ways) sorry if i sound stupid...just need to be sure first.

    Thanks,
  • iMV Level 1 Level 1 (40 points)
    I have also experienced this problem lately. Just shuts down no warning anymore. I usually have to 40% battery life left but need to start with adapter SMC reset did not help or only shortly problem returns (only 490 cycles)
  • Trizzy_Trey_Rogers Level 1 Level 1 (5 points)
    iMV,

    i did read your post and would advise to run a software update so you can get the latest soft release 10.5.8 id u havent already. If problems persist try taking it to an apple store, you get 15 minutes of free support
  • Trizzy_Trey_Rogers Level 1 Level 1 (5 points)
    Hey Alex

    No problem just trying to help and no thats not a stupid question, i understnad where your coming from completely. Resetting your SMC can actually enhance the performance of your system, it does not wipe the hard drive in any way at all, it simply resets the low level functions and is a basic step for resolving unexpected shutdowns.
  • iMV Level 1 Level 1 (40 points)
    sorry i did not update my info, but running snow L 10.6.4
  • Alex Predko Level 1 Level 1 (0 points)
    Ok my macbook has just shut down randomly again and i'm getting kind of fed up with it so i think i will try the smc reset now
  • Ben Steeves Level 1 Level 1 (15 points)
    Go to the Apple menu, About this Mac > More Info... then choose "Power" and copy-and-paste the information displayed. It sounds like your battery may be the issue.
  • Alex Predko Level 1 Level 1 (0 points)
    Ok guys, I have just reset my smc, so we will see how things go. I turned off the macbook, took out the charger, took out the battery, held the power button for 5 seconds, then put the battery back in and the charger back in, then turned on the macbook. Those are the correct steps right?

    Anyway we will see how things go and if it turns off again ill let you know, and thanks for your help so far guys.
  • Richard Gilpin Level 2 Level 2 (165 points)
    I am having spontaneous shut-downs, too, but it seems to occur only when I am watching a video in Miro and then only after about three minutes of viewing.

    In case it helps, here is what I get from the "Power" entry on "About this Mac:"


    System Power Settings:

    AC Power:
    System Sleep Timer (Minutes): 10
    Disk Sleep Timer (Minutes): 10
    Display Sleep Timer (Minutes): 10
    Automatic Restart On Power Loss: No
    Wake On AC Change: No
    Wake On Clamshell Open: Yes
    Wake On LAN: Yes
    Display Sleep Uses Dim: Yes
    Battery Power:
    System Sleep Timer (Minutes): 10
    Disk Sleep Timer (Minutes): 10
    Display Sleep Timer (Minutes): 2
    Wake On AC Change: No
    Wake On Clamshell Open: Yes
    Display Sleep Uses Dim: Yes
    Reduce Brightness: Yes

    Battery Information:

    Battery Installed: Yes
    First low level warning: No
    Full Charge Capacity (mAh): 4745
    Remaining Capacity (mAh): 2920
    Amperage (mA): 1538
    Voltage (mV): 11987
    Cycle Count: 1809

    AC Charger Information:

    Connected: Yes
    Charging: Yes

    Hardware Configuration:

    UPS Installed: No
  • Clumsymaxi Level 1 Level 1 (0 points)
    I also have had my mac shut down on me at random. Just starting yesterday. Both during battery powered operation. first time i had just unplugged it for about 15mins. The second time it was half way trough a movie. I already tried the SMC reset. If it is at all helpful here is my Power info


    Charge Information:
    Charge remaining (mAh): 1247
    Fully charged: No
    Charging: Yes
    Full charge capacity (mAh): 2936
    Health Information:
    Cycle count: 347
    Condition: Fair
    Battery Installed: Yes
    Amperage (mA): 1151
    Voltage (mV): 12277
  • Jay Bullock Level 4 Level 4 (3,800 points)
    Full charge capacity (mAh): 2936
    Cycle count: 347
    Condition: Fair

    Low capacity, high cycle count, and merely "Fair" for condition--you need a new battery for full functionality.
  • Clumsymaxi Level 1 Level 1 (0 points)
    only 3 cycles and it drops 800 mAh?!?!?!


    Full charge capacity (mAh): 2136
    Health Information:
    Cycle count: 350
    Condition: Fair
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