I have inspiron 15 and you can tell that the chassis bends if you pick it up from one corner. The entire chassis bends. So why in the mother of esus christ do they use a heat sink with a heat pipe 4 inches away from anything that is screwed down? This is a design flaw. My laptop rattled, so I replaced the fan. In a month, it rattled more. So i bent the heat pipe to put pressure against the motherboard, and it rattles less. So i put the original fan in, and it rattles less. THis wouldn't be a shttshow if the %#*@ engineers used their brains for two seconds, and realized that if you design an object that moves, maybe don't design it with shtt that gets permanent deformation in metal objects within the object, and they rattle like fck. Its a good thing Dell doesn't design cars, or the *!&$!&$^ engine would jump out from under the hood, and take itself for a drive instead of the entire car.