Introduction
Is your Lenovo IdeaPad 330-15IKB 81DE failing to boot properly? Are you seeing error messages like “CMOS Checksum Error” or “Invalid Configuration”? These could be signs of a failing CMOS battery. This guide will walk you through the necessary steps and tools to easily replace your CMOS battery, helping your system get back to running smoothly!
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Ensure the laptop is powered off.
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Turn the device over so the bottom is facing up.
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Remove the 13 6 mm screws from the bottom of the device using a Phillips #0 screwdriver.
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Carefully glide a Jimmy along the seam of the casing.
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Remove the back cover of the laptop.
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Conclusion
To reassemble your device, follow these instructions in reverse order.
