Computer can't turn off

Very odd thing...
i'm not too sure how or why it happend, but
my version of itunes has stoped working and said it was corrupt, then my desktop picture changed back to the mac default one, i can't change it to any other picture,
the eject button on my keyboard won't work either.
i've tried to shut down my computer, but it can't shut down itself it can only be manually shut down.
i've tried to reinstall the operating program but, the computer can't restart to start the process..
what's going on????
write to holy****[email protected]

Hi nativityinpsyche-
Greetings and welcome to the Apple Discussion boards
Try booting from your system installation DVD and run Disk Utility to repair permissions on that drive.
Out of curiosity, do you have less than 20% free space left on the drive in question?
Luck-
-DaddyPaycheck

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<Personal Information Edited by Host>

FinchDrive wrote:
I just finished running the AHT and an extended test. Hardware error pointing to the battery on both:
4xxx/40000005: "Battery"
and 4xxx/4/40000005: ◊òä "Battery"
upon the extended test.
Do these codes refer strictly to the battery, or to possibly other components that interact with it?
I can not give you a definitive answer to that. The 'x's' which I have marked should be letters. If so, could you provide them and that may give us a clue:
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http://eshop.macsales.com/item/NewerTech/BAP15MBU78W/
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Computer can't turn off

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