simple if your fan is not working its easy and its very cheap to buy oem parts online..it only cost a dollar.. remove teh battery first then you have to remove all the screws of your lap top ..then you might want to take a picture of the cable wires or ribbons before you took it apart that way you can remember how to put it back.. then remove the dvd drive the ssd the ram and then you need to pry open the keyboard area..unscrew all of the screws un plug the ribbon connecting the built in mouse and keyboard,then remove the lcd ribbon remove all the ribbon gently .. then you can remove the keyboard housing by prying it gently using a flat screw..when the board is expose now remove the power ribbon the fan ribbon located on the rigthcorner their is a hidden screw beside the fan remove that as well,then unscrew the 4 gold screws that attach the mother board to the housing…you can not replace the old fan with a new fan…you might as well clean the fan holes or check if their is dirt or dust blocking the...