If you have this machine, update the bios to A06 to take care of some fan issues and as one said earlier, keep it clean! Get a can of compressed air and blow out the heat sinks as regular maintenance. Be sure to blow out the fan intakes in addition to the heat sinks. I usually just put my hand behind the exhaust ports to feel how much air is coming out and know when it's time to blow them out.
(upgrade your bios if you have fan problems, there is a known fix)
the above were from users with heating problems ....