The bios chipset should already have a heat sink on top of it that often varyies in appearance depending on make and model processor. Usually it will look like a sink without a fan smaller in size then you would see on a cpu setup. But that will stand out from any other ICs seen on the board. On many board the bios chipset is soldered directly to the board itself where you would be better to send a board or in a laptop the entire unit into a factory authorized service center in order not only to swap out the chipset itself but to have them run a full diagnostics to insure integrity. A service center would be the best route for laptops since they generally made compact as use and throw units due to the limitations seen there.
