Introduction
If you are unable to move the mouse and it is overly sensitive, use this guide to replace your touchpad.
Tools
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            Remove the nine 6 mm screws using a T5 Torx Screwdriver. 
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            Remove the two 10 mm screws using a T5 Torx Screwdriver. 
 
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            Disconnect the battery by using a plastic opening tool or your fingers to push the connector towards the battery. 
 
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            Open the laptop and, with the assistance of the iFixit blue plastic tool, guide the touch pad through, it should come out on its own. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.