Ok, on a laptop you need to get some cups and label them to put the screws in so you will know where they came from. Remove the Power Cord, Remove the Battery then start removing all the screws from the bottom of the laptop. Then remove all the devices from the bottom of the laptop such as the hard drive, the memory, dvd/cd drive, wireless card, etc. Take note of how the wires are on the wireless card, those are the antennas. Look inside the battery case, hard drive case, memory case and dvd drive slot for screw. Some screws on the bottom case in inside of some of the device cases might have the icon of a keyboard next to it. Those screws hold the keyboard in place. Turn the laptop over, remove the strip that is just above the keyboard but be careful because a cable might be attached to it. Then remove the screws that hold the keyboard in place that are under where the strip was and gently lift the keyboard out because there is definitely a cable under it. Next you can remove the screws from the lcd hinges at the corners and lift the lcd screen off, also note that you will have to pull the antennas cable and the lcd cable when you remove the lcd. Next start removing any screws that hold the palmrest in place. Take note of any cables that are attached to the palmrest and remove them then lift the palmrest off. Next start removing any screws you see that hold the motherboard to the bottom case, then lift the motherboard out an start replacing the fan. A digital camera to take pictures will be most helpful to refresh you memory of where things were.
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