Introduction
This is a guide for replacing the CMOS battery on the XPS 15 9570. On this laptop, Dell made it vary difficult to access the CMOS battery, as it is on the other side of the motherboard.
What you need
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Using the Phillips #00 screwdriver, remove the four 4 mm screws holding the battery in place.
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Use the Phillips #00 to remove the three (without graphics card) or four (with graphics card) 3 mm screws that connect the heat sink to the system board.
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Use the Phillips #00 screwdriver to remove the two 4 mm screws securing the grey display cable bracket.
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Use your fingers to pinch down the metal tabs holding the RAM in place. Do this for each tab.
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Using a Phillips #00 screwdriver, loosen the captive screw holding the wireless card bracket in place.
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Disconnect the two motherboard cables located on the bottom of the motherboard using the opening tool.
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To reassemble your device, follow these instructions in reverse order.