6-10 Solving System Problems6. Gently put the ball back into the mouse.7. Fit the ball cover back into the mouse and turn the coverclockwise until it locks in place.Battery ReplacementAll system boards use a battery to maintain systemconfiguration information. The system uses a coin-cellbattery mounted on the system board (see the followingfigure). If it fails to maintain system configurationinformation, replace it with an identically rated battery fromthe same manufacturer.! CAUTIONRemoving the battery from the system boardcauses the computer to lose systemconfiguration information. Prior to removing thebattery, run the BIOS Setup Utility (seeChapter 3) and print out or write down thesystem configuration settings. Then you canrestore the system to its previous settings.! WARNINGThe battery can explode if it is incorrectlyreplaced or improperly discarded. Use only thesame battery or an equivalent typerecommended by the manufacturer whenreplacing the battery.Lithium acts as a catalyst when exposed to waterand causes spontaneous combustion on contact.Discard used batteries according to themanufacturer’s instructions.
