Introduction
The wireless card is what allows you to connect to the internet. It is a small component, but is still very important. This guide will show you how to replace it.
Tools
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            Press and hold the release switch, and then slide the battery out. Insert the new battery into the slot and you're done! 
 
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            In the battery compartment, find the phillips screw that is holding the rear panel onto the computer. Unscrew it. 
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            With the battery compartment closest to you, push the panel away from you. Once it slides back until it stops, gently lift it and put it to the side. 
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            Please note that this particular screw does not completely come out, it stays with the rear panel and that is ok. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.