MAc Book Pro( Keep Getting black screen )

I have had my Mac book Pro for about a year now. In the past 3 month i have been getting that Black screen of death more than usual. Alot of the time is when i go to shut down my computer. What could case the problem, and how do i get ride of this.

I have checked my disk permission and repaired them and getting no issues.
And deleted all of my useless files to an external.

Try zapping the PRAM. Also, a black screen could indicate the internal battery is dying.

Where would i go about doing this??


Thanks
DB

Go the apple store. Try and replicate the problem for them. If you've never done this, you have to make an appointment. Either do it from one of the computers in the store or from your home computer.

*Moved to appropriate forum - Question on Hardware/Apple Notebook not on forum suggestions or comments*

To reset the Pram...
http://docs.info.apple.com/article.html?artnum=2238
Information on Pram...
http://docs.info.apple.com/article.html?artnum=86194
A How to link...
http://www.ifixit.com/Guide/Mac/