Technology Software

How Do I Remove the Touchpad on an Inspiron 640M?

    • 1). Turn off your laptop, and unplug the AC power adapter from its socket. Disconnect any other external devices. Close the LCD screen, and place the laptop face down.

    • 2). Rotate the computer so the front opening is facing toward you. Locate the battery near the top of the laptop's bottom case. Press on the battery release button, and then remove the battery from its compartment.

    • 3). Locate the CD/DVD drive in the bottom left corner of the laptop. Remove the single Phillips screw securing the drive in place. Insert a small screwdriver into the screw hole. Push the drive out of the compartment through the screw hole. Grasp the face of the drive, and then pull it out of the compartment.

    • 4). Remove the two Phillips screws from inside the battery compartment. Place the laptop face up, and then open the LCD screen all the way. Insert a small, flat-head screwdriver into the right side of the hinge cover. The hinge cover is a thin plastic strip spanning the width of the laptop situated between the keyboard and LCD. Pry the hinge cover from the laptop.

    • 5). Grasp the keyboard assembly, and then slide it toward LCD screen to disengage it from the laptop case. Tilt the keyboard upwards, and then place it face down over the palm rest.

    • 6). Locate the keyboard ribbon cable on the bottom side of the keyboard. Follow the cable to where it connects to the motherboard. Carefully disconnect the cable from its connector on the motherboard. Remove the keyboard from the laptop.

    • 7). Locate the LCD ribbon cable extending from the left side of the LCD screen. Disconnect the LCD cable from the motherboard. Locate the two antenna cables coming from the right side of the LCD. Disconnect them from their connectors on the motherboard.

    • 8). Remove the two Phillips screws from each LCD hinge. Lift the LCD screen assembly from the laptop's base.

    • 9). Flip the laptop over, and position the laptop with the front facing forward. Locate the processor compartment in the top right corner of the bottom case. Remove the three Phillips screws securing the processor cover in place. Remove the cover from the laptop.

    • 10

      Remove the four Phillips screws securing the heat sink in place. The heat sink is a metal device with a copper pipe extending from it. Lift the heat sink out of the processor compartment.

    • 11

      Remove all remaining Phillips screws from the laptop's bottom casing. Place the laptop base face up. Remove the four Phillips screws securing the top case to laptop.

    • 12

      Disconnect the two visible ribbon cables from the right side of the motherboard. Locate the touchpad cable situated inside the access hole above the touchpad. Disconnect the touchpad cable from the motherboard.

    • 13

      Use a small, flat-head screwdriver to disengage the locking latches along the back edge of the laptop. Carefully remove the top casing from the laptop. The touchpad is built into the top casing.



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