Introduction
Is your computer experiencing problems with connecting to the Wi-Fi or the internet? Consider using this guide to replace the WLAN card in your device.
Tools
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            Ensure the device is powered off and unplugged. Close the device and orient it face up, with the hinges further away from you. 
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            Flip the device over so the backside is facing you. 
 
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            Using the plastic opening tool, pull the back panel upward. Move the opening tool along the edge of the device and lift the panel off of your device. 
 
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            Locate the WLAN chip. It is a small wireless network card with two small cables connected to it, one black and one white. 
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            Using a Phillips #0 screwdriver, remove the single 2mm screw from the WLAN card. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.