Introduction
Wi-Fi cards are often replaced to gain faster internet connection. This guide where show you where the Wi-Fi card is located and how to replace it.
Tools
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            Turn the laptop over. 
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            Remove all nine 3mm screws on back panel with a Phillips Head 1 driver. 
 
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            Flip the laptop right side up and open the clamshell. 
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            Starting at the bottom right corner, slide the opening tool into the crevice between the blue and silver panels. 
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            Carefully pry the top casing up around the edges, moving counterclockwise. 
 
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            Close the laptop and orient it on its side (clamshell hinge up), carefully holding it steady to ensure its safety. 
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            Insert the opening tool inside of the hinge and pry with an even amount of force to disconnect the keyboard panel from the fan grate. 
 
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            Reorient the laptop in an upright fashion and open the clamshell. 
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            If needed, continue to pry the silver keyboard panel from the rest of the hardware with minimal force. 
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            Slowly slide the silver keyboard panel towards you while lifting gently to separate the halves. 
 
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            While keeping silver keyboard panel hovering above the laptop, locate the touchpad connector ribbon attached to both the silver panel and motherboard. 
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            With your finger, flip up the white clasp that holds the connector, releasing the connector ribbon. 
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            Unpeel the connector ribbon from its position on the motherboard. 
 
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            With your finger, flip up the white clasp that connects the larger keyboard connector to the motherboard, releasing the connector ribbon. 
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            Gently pull the connector ribbon from the clasp. 
 
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            With the internal hardware exposed, disconnect the battery cable from the motherboard. 
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            If tightly fastened, gently wiggle the plug out of the jack. 
 
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            Remove the three 4mm screws around the perimeter of the battery pack with a Phillips Head 1 screwdriver. 
 
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            Flip up the two white clasps that hold the connector ribbon to the battery to release the ribbon. 
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            Remove the 'motherboard to USB board' connector ribbon from its place. 
 
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            Detach the speaker cable from its fastener on the motherboard by pulling it out with your fingers or using a spudger. 
 
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            Using your fingers, gently pry out the two L-shaped speaker panels from between the external casing and battery pack. 
 
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            Remove the three 3mm screws that hold the cooling fan in place using a Phillips Head 1 driver. 
 
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            In the upper right hand corner of the device, remove the 6mm screw holding the PCB board in place by using a Phillips Head 1. 
 
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            Using your fingers, pull the Wi-Fi card located on the right side of the detached motherboard out of its place. 
 
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To reassemble your device, follow these instructions in reverse order.