Macbook will not power off

Question

Macbook will not power off

Hi all, I've been having a problem with my macbook for the past few months now. when i turn it off (by pressing the power button or by going to apple>shut down) the computer will start the shut down procedure and the screen will turn off. BUT the computer isn't really off. I can hear it humming and when i close the screen, the sleep light will pulsate like normal.

I have let the computer sit with a black screen for 10+ minutes before closing the screen with the same effect.

the only way i can get the computer to actually turn off is by holding the power button for about 5 seconds.

I tried resetting the PRAM? i think, and it helped for a day, but the problem occured again as normal. So, what can i do? im getting tired of having to hold the button every time i want to shut the computer off. TIA

-Aaron

Macbook, Mac OS X (10.5.1)

Posted on Feb 17, 2008 11:05 AM

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Answer 1

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First Magus

Level 7

21,278 points

Feb 17, 2008 11:12 AM in response to aroge1@newhaven.edu

Reset the SMC (System Management Controller). What model MacBook do you have?

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Answer 2

Feb 17, 2008 11:28 AM in response to First Magus

the macbook is the black 2.0 duo core processor

but resetting the SMC seems to have worked, so thanks a lot. If it happens again let you guys know

-Aaron

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Answer 3

First Magus

Level 7

21,278 points

Feb 17, 2008 11:36 AM in response to aroge1@newhaven.edu

You might want to check this also. As it can cause problems with the battery.

Check and see if you have battery update 1.3 installed. You should find it at the location listed. Right click on the bundle and check *Get Info* a window will open and you can check the version there.

MacBook/System/Library/SystemConfiguration/BatteryUpdater.bundle

Leopard(10.5.1) and Tiger(10.4.11) installs it. It is the MacBook Pro update.

If it is 1.3 drag it to the trash and then reboot. After you reboot you will be able to empty the trash. Once you have done that run software update and it should install Battery Update 1.2. You should reset the SMC (System Management Controller) after doing this.

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