Is there a way to find out what component in my laptop is generating noise?

"I had this problem with my old Latitude 2120. It would make this horrible noise, overheat, take a nap. I thought I would have to replace the fan, had it open, and bam..there it was. A small piece of plastic (I still have no clue where it had come from) was inside of the fan case. Removed it and bam, that fan worked for the rest of the computer's life. So I'm seconding the above comment. (I can't leave a comment as I'm still new yet.)

So maybe take it apart and give it a look. You never know. I hope this helps, and if it doesn't then I hope you find the answer you're looking for!"