Introduction
This is a replacement guide for the internal cooling fan of a Acer Aspire 7750G-6645. This guide may be helpful if the fan starts to make loud noises or if the computer starts to heat up too much too fast.
Tools
Parts
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            Turn off the laptop, and open the lid. 
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            Separate the first two layers by prying them apart, using a spudger. 
 
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            Lift the keyboard, so that its ribbon is visible. 
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            Remove the ribbon from the board by using a small metal spudger or flathead screwdriver. (if needed) 
 
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            Remove the two 3mm screws using the Phillips #00 screwdriver. 
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            Remove the two 6mm screws using the same screwdriver. 
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            Remove the fan cover to gain access to the fan. 
 
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            Lift the fan up and away from the device. Do not remove the fan from the device. 
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            Desolder the attached part using a Soldering Iron to heat it up and remove the leftover heated lead by using a Desoldering Pump. 
 
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To reassemble your device, follow these instructions in reverse order.