I've tried the [Fn] test by holding the Fn button while powering on the laptop. After a minute I get a set of 5 musical notes in a row that repeats 2 or 3 times, followed by a singular note 3 times, and then the muscial cycle repeats.

My AlienWare 51 continues to reboot after being logged into the OS for 5 minutes. I purshased a new PSU, a new MotherBoard(same model as the one that comes with the X51) I puled each Graphic Card one at a time, same with the RAM. I even re-installed the OS.

I received me lemon of a laptop from you in August 2011. It was refurbished and was shipped dead on arrival. You gave me in home sevice and they had to replace the motherboard. One of the USB ports has not worked since then. Since day 1 I have always had problems booting.