Dell Vostro 3500 CMOS Battery Replacement

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CMOS battery removal

Locate the CMOS battery
Gently disengage its connector.
Do not disengage the connector by pulling the leads as you may tear them out of the connector. Instead, pull on the connector itself, ideally with a pair of tweezers, rocking it back and forth alternately in the directions of the red and black leads.

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