macbook won't sleep/shutdown/restart

[Snowflake]

Hi, I've got a black macbook intel core 2 duo and sometimes, for some reason, it just won't shutdown or even go to sleep.

Actually it won't go to sleep at all whatever method I use and when I try to shutdown or restart, it will quit OSX, get the blue log out screen and then there's this logo thing circling around like when powering up and then, well it just kinda gets stuck there, the logo keeps working but the macbook won't power off. I've waited for half an hour without result.

Please help!

 

[deadpixels]

boot from your installation disk and run disk utility from there to see if it helps. if it does not, then back up and re-install.

 

[Snowflake]

ok i'll give it a try thanks.

 

[Snowflake]

Hi, sorry for not coming back at you guys sooner.
So here's a little feedback. All updates are on and stuff.

So, as long as I have my macbook on my desk, I can put it too sleep as much as i want, no problem. Can even use three ways, the apple menu, the keyboard shortcut or closing the lid.

Here's what happened today. Actually yesterday I unplugged my macbook, closed the lid, waited for the light to pulse slowly before putting it into its case. Today I get to school, open the lid, it wakes up, I try the alt+command+eject thing, doesn't work, try the apple menu, doesn't work, try closing the lid, doesn't work but when i open back my lid, it kinda shuts down. i have to press the power button for a few seconds for it to be truly shut down. then i power it up again and can put it to sleep without problem. i then get down thre levels in my school building try to wake up the thing and put it back to sleep, no problem. not a motion problem i guess.

however i have i tried once to move from my room to downstairs and it did bug.

may i add that i have a wireless mighty mouse that automatically connects to my macbook. i suspect the deconnection to be failing.

any ideas?