why the touch pad of my dell insperion 7520 laptop is heated up?

the touch pad of my dell insperion 7520 laptop is heated up while running. I have taken all primary cautions which i can take. but no result.The heating is not very much; although not negligible. My laptop is 2 months old only; is it a system problem? what is the solution?
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  1. format and re install OS
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