Replacing the Coin-Cell Battery | 43Replacing the Coin-Cell BatteryWARNING: Before working inside your computer, read the safety informationthat shipped with your computer and follow the steps in "Before You Begin" onpage 7. After working inside your computer, follow the instructions in "AfterWorking Inside Your Computer" on page 9. For additional safety best practicesinformation, see the Regulatory Compliance Homepage atdell.com/regulatory_compliance.WARNING: The battery may explode if installed incorrectly. Replace the batteryonly with the same or equivalent type. Discard used batteries according to themanufacturer’s instructions.ProcedureWith the positive-side facing up, snap the coin-cell battery into the battery socket on thesystem board.Postrequisites1 Replace the system board. See "Replacing the System Board" on page 39.2 Replace the palm-rest. See "Replacing the Palm-Rest" on page 28.3 Replace the keyboard. See "Replacing the Keyboard" on page 24.4 Replace the optical-drive assembly. See "Replacing the Optical-Drive Assembly" onpage 17.5 Replace the hard-drive assembly. See "Replacing the Hard-Drive Assembly" onpage 21.6 Follow the instructions from step 3 and step 4 in "Replacing the Memory Module(s)"on page 14.7 Replace the battery. See "Replacing the Battery" on page 11.8 Follow the instructions in "After Working Inside Your Computer" on page 9.