Introduction
Sometimes a faulty wireless card causes network connection issues, and replacing the card should alleviate them. You’ll need to remove the keyboard as a prerequisite, requiring a PH0-head screwdriver, a rigid pry-tool, and some gentle care needed when opening the ZIF connector. The rest of the process is fairly simple.
Tools
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            Flip the laptop over, so that the "top" of the laptop is against your working surface. 
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            Orient the laptop so that the silver label is in the bottom-left corner, with the battery facing you. 
 
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            On the right side of the battery, move the tab marked 1 to the right, unlocking the battery. 
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            On the left side of the battery, hold the tab marked 2 to the left while pulling the battery towards you. 
 
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            Starting at the right, pry up part of the plastic bar by using a spudger between the F12 and Insert key. 
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            Pull up on the rest of the plastic bar to remove it. 
 
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            Once screws are removed, lift the keyboard closest to the screen and gently flip it over. 
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            Using the spudger, lift up the white ZIF connector to unlatch the ribbon cable, and gently remove the cable. 
 
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            Underneath the keyboard, gently disconnect the black and white wires on the right of the wireless adapter using a thin plastic spudger. 
 
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            Unscrew the one 3mm screw in the top-left corner of the wireless adapter using a PH0 screwdriver. 
 
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To reassemble your device, follow these instructions in reverse order.