Introduction
The CMOS battery maintains the computer's startup settings as well as its internal clock. If your computer notifies you about changing this battery, it is best to do so immediately.
What you need
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Remove these two 4mm Phillips screws on the back panel using a Phillips #00 screwdriver and remove the cover to reveal the CMOS battery
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Locate the CR2032 watch battery
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Using a 2.5mm flathead screwdriver, carefully pry up the battery using the tab to the right of the battery
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