DV6-3042tx - very hot after several hours used

I bought a HP laptop, model DV6-3042tx, several months ago. Now my laptop is very hot after 2-3hrs used, especially on the left side of the keyboard surface, where there are some connections usch as USBs, HDMI, etc. What should I do now?

    Reset PRAM:   http://support.apple.com/kb/PH14222
    Reset SMC.     http://support.apple.com/kb/HT3964
  Choose the method for:
  "Resetting SMC on portables with a battery you should not remove on your own".

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