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After software fixes were not useful, it points to faulty hardware or connections in such case we are going to learn how to remove the touchpad from the Samsung series 9 NP900X3C-A02US laptop and replace it with a new one or clean the old one and install it to improve the function of the touchpad.
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Shut down the laptop.
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Power off the laptop by navigating the window icon on the bottom left and clicking on the power followed by shutdown.
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Remove the back cover of the laptop by using a Phillips #00 screwdriver to remove ten 2 mm screws.
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Pry out the bottom panel on all sides using a prying tool.
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Unscrew the internal battery and disconnect it from the motherboard.
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Remove all the cables, tapes by using the tools such as plastic spudgers.
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Look for the ribbon cable connection and by using the spudger to pull up the clip and unlock the ribbon cable.
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Peel out any tapes holding the touchpad carefully.
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By using the prying tool unstick and detach the module.
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Remove four 0.1mm screws using a Phillips #00 Screwdriver from the laptop.
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Open the laptop a little bit to create space to drop the touchpad module by pushing it gently downwards.
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After taking out the touchpad clean it especially at the edges and the corners by using rubbing alcohol and microfiber cloth.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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