Introduction
If the troubleshooting procedures and all of the previous steps do not work it may be time to change the motherboard ground wire.
Tools
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Remove the screw caps using a metal spudger.
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Remove the four 6 mm screws using a Phillips #0 screwdriver.
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Insert a plastic opening tool into the case seam and slide it along the edges.
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Lift and remove the back panel from the device.
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Conclusion
To reassemble your device, follow these instructions in reverse order.