For those who have an Dell XPS 2710 and are suffering from fan noise, I highly recommend that you clean the fans inside your Dell.
To do this, you need to unplug your computer and lay it flat (with the screen facing down) on a soft surface. I placed a towel down and laid my computer on the towel.
To remove the back cover, refer to page 19 of the XPS One 2710 Owner’s Manual. There are just two screws on the back that you have to unscrew. The screws do not come all the way out.