I am wondering if anyone else has encountered this problem. My laptop stopped powering on on day. No led lights on the front and I tried a different power supply. I tired the different suggestions on the forms but non of them worked. I did notice a ratting sound inside the computer. As the computer was out of warranty I decided to take it apart to investigate. (I've taken about many laptops before.) I discovered that the ratting was from 3 of the mettle clips around the RAM over that had fallen off. My guess is that these had fallen off and sorted the motherboard thus killing the computer.
I am surprised that Dell would create a laptop where mettle parts fall off and damage itself.