Introduction
This is a guide on how to remove the IO Board on a Dell Chromebook 3100.
Please note that the battery removal is not required for this guide, but it is strongly recommended.
Tools
Parts
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            Flip the laptop so the bottom is facing upwards. 
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            Loosen the nine screws from the back panel using a Phillips #0 screwdriver. 
 
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            Remove the screws attached to the battery using a Phillips #0 screwdriver. 
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            Disconnect the battery from the motherboard by gently pulling on the connector cable at the top of the battery. 
 
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            Remove the screws from the IO Board using a Phillips #0 screwdriver. 
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            Carefully disconnect the IO power cable labeled with "IO" and "MB." 
 
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            Carefully disconnect the IO connector cables by applying light pressure and popping them off of the motherboard. 
 
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To reassemble your device, follow these instructions in reverse order with the new IO Board.