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Upon boot up, the computer may read a “CMOS checksum error,” or date and time keep getting reset. If this is the error you are receiving you should replace your CMOS Battery.
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Press the battery release tab and the battery will pop up.
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Remove the battery from the laptop, it will come out easily.
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Remove the single screw holding the accessory plate. This is a PH0 2.0x2.5 screw.
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Pry the accessory plate up from the back of the laptop by applying force upwards where the screw was removed.
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Remove the screw from the wireless adapter with a PH0 screwdriver then move the adapter out of the way to access the CMOS battery.
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Use a plastic or metal spudger to release the CMOS battery from the clips.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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