Follow the safety guidelines listed in the Safety instructions.
Follow the procedure listed in the Before working inside your system
Turn off the system, including all attached peripherals.
Disconnect the system from the electrical outlet and disconnect the peripherals.
If applicable, remove the system from the rack.
Remove the system cover.
If installed, disconnect the power or data cables from expansion card(s).
Replacing the system battery:
Locate the battery socket. For more information, see the System board jumpers and connectors section.
CAUTION: To avoid damage to the battery connector, you must firmly support the connector while installing or removing a battery.
Use a plastic scribe to pry out the system battery.
To install a new system battery, hold the battery with the positive side facing up and slide it under the securing tabs.
Press the battery into the connector until it snaps into place.
If removed, connect the cables to the expansion card(s).
Place the system upright on a flat, stable surface.
Reconnect the peripherals and connect the system to the electrical outlet.
Turn on the attached peripherals and then turn on the system.
While booting, press F2 to enter the System Setup and ensure that the battery is operating properly.
Enter the correct time and date in the System Setup Time and Date fields.
Exit the System Setup.