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Chapter 7: Upgrading Your Computer
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Replacing the system battery
If the computer clock does not keep time or the settings in the BIOS Setup utility
are not saved when you turn off your computer, replace the system battery.
Use a battery of the same size and voltage as the original battery that was in
your computer.
To replace the battery:
1Open the BIOS Setup utility using the instructions in “Using the BIOS Setup
Utility” on page 123.
2Write down all the values in the menus and submenus, then exit from the
utility.
3Shut down your computer.
4Open the case using “Opening the case” on page 92.
5Locate the old battery on the system board and note its orientation. You
will need to install the new battery the same way.
Warning Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer. Dispose of used
batteries following the manufacturer’s instructions.