Introduction
A motherboard can fail for a variety of reasons but this guide assumes that you have diagnosed a system failure and have acquired a new motherboard to use as a replacement. Understanding how a motherboard works is different from knowing how to replace one and only a limited knowledge of computer components is required to complete this process. Follow this guide if you need to replace the motherboard of your HP 15-g071nr.
Tools
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            Carefully move the iFixit opening tool along the seam of wrist rest until you can remove it. 
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            Remove the wrist rest once it comes loose from the body. 
 
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            Remove the two screws with the Phillips #0. 
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            Gently pull the hard drive out of its SATA connection to the motherboard. 
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            Attach the loose data cable to the new drive. 
 
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            Use one of the plastic opening tools or spudger to lift the keyboard from its housing. 
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            Slowly lift the keyboard at angle toward the left. 
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            Just above the blue plastic connection to the motherboard is a clamp . Use your finger to lift this bar and release the cable. 
 
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            Lift the keyboard with your hand being careful to unseat the ribbon cable with the blue tab. 
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            Use the Phillips #0 to remove the five highlighted screws. 
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            Lift the plate off of the back of the motherboard. 
 
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            Remove the three screws connecting the fan to the motherboard with the Phillips #0. 
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            Remove the fans connection to the motherboard. 
 
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            Carefully pull the wireless card from its interface with the motherboard. 
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            The marked connector is the antenna's connection. Use two fingers to wiggle the connector loose from its fitting. 
 
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            Remove the screen connector by pulling on the plastic tab. 
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            Gently wiggle the connector side to side while pulling toward the battery. 
 
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            Slowly lift the motherboard by pinching on the middle of its right side. 
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            Wiggle the motherboard side to side to remove. 
 
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To reassemble your device, follow these instructions in reverse order.