Introduction
This repair guide provides step-by-step instructions for replacing individual keys of the ASUS Chromebook C300M-BBCLN12 keyboard. The repair may be required if keys are sticking or are not working.
Tools
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            Wedge the plastic opening tool between the defective key and the keyboard. 
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            Pivot the plastic opening tool back and forth to loosen the defective key. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.