Hello, recently I bought an Inspiron 17R-7720 and there is something about it that keeps bugging me. The first week I noticed a barely audible sound coming from the left part of the laptop, near the fan, it sounded like those old hard drives from desktops sound when they are working. But now, that sound has become more audble and with it, now I can hear a high pitched sound that disappears when I plug the charger. A video with the weird sound can be seen here:
http://www.youtube.com/watch?v=7T59B1XTFzw&feature=plcp
Any ideas? Chat seems to be closed so I posted this.