Introduction
In the case of a broken touch pad or Palm Rest, this guide will demonstrate how to replace the Palm Rest of the Dell XPS 17 L702X.
Tools
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            While holding the tab, lift the battery out of its compartment. 
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            Release the tab after removing the battery. 
 
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            Lift the module cover by inserting a plastic opening tool into the crevice near the screw and lift upwards. 
 
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            Slide the hard drive with your hand towards the hole where the back panel assembly screw was located (in step 5) to disconnect it. 
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            Lift the hard drive up to remove it from the case. 
 
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            Unscrew the two 4mm screws from each side of the hard drive casing with a Phillips screwdriver. 
 
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            Unscrew three 4mm screws near the edge of the optical drive compartment with a Phillips screwdriver. 
 
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            Open the laptop to about a 90 degree angle and place it on its side with the empty optical drive slot pointing upwards. 
 
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            Push and hold the tab inside the optical drive's opening with your index finger. 
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            Insert a spudger between the black and silver plastic pieces that are above the tab and pry apart the two pieces. 
 
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            Gently lift and rotate the palm rest panel until it's upside down as it is still connected by the mouse pad wires. 
 
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            Put the spudger below the black tab of the wider cable and push up to release. 
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            Gently pull out the cable. 
 
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            Insert the spudger below the black tab of the remaining cable and push up to release. 
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            Gently pull out the cable. 
 
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To reassemble your device, follow these instructions in reverse order.