Einleitung
You should consider replacing the wireless card if you have no internet connectivity. Also, you should try replacing it if you do not see any networks available to connect to.
Werkzeuge
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Pry off the second white panel, removing two clips underneath.
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Start from the middle, and then work on the sides. The sides may be difficult to remove, so try to focus on one side and work your way around.
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Pry off the gray piece by removing the clips around it.
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Then, unplug the battery and separate the gray piece from the motherboard
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Abschluss
To reassemble your device, follow these instructions in reverse order.