Einleitung
The fan helps get rid of the excess heat in the laptop. A damaged fan can cause overheating and poor performance. This guide explains how to replace it.
Werkzeuge
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            Place the laptop on a flat surface with the bottom side facing upwards. 
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            Using the Phillips #1 Screwdriver, remove the four 4mm screws in the back panel. 
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            Using both hands, slide the back panel away from the laptop horizontally. 
 
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            Locate the three ribbon connectors. 
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            Using the plastic opening tool, flip up all three gray tabs and remove the ribbon connectors from the motherboard. 
 
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            Disconnect the WLAN Card from the motherboard by pulling the connector upwards. 
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            Disconnect the optical drive from the motherboard by sliding it to the right. 
 
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            Flip the motherboard to show the underside. 
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            Locate the square fan connection attached to the motherboard. 
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            Disconnect it using the tweezers (blunt). 
 
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To reassemble your device, follow these instructions in reverse order.