I have a new Dell Inpspiron N4010 (says "PREMIUM SOUND" next to the Dell logo), with Windows 7, Service Pack 1, Intel Core i3 CPU M 380.  After a few weeks a loud high pitched screeching noise started coming from the laptop.

I tried the Blu Ray fix suggested in this forum, but it didn't work.

Does anyone know of a fix?  Or should these laptops all be recalled due to a more serious problem? 

I did a google search and it appears that other brands are also having this problem.