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3Write down any custom values that have been set in the menus and submenus, then exit from the utility.

Caution

Any custom BIOS settings you have made will be lost when you remove the system battery. All settings will return to their factory defaults.

4Shut down your computer.

5Open the back panel by following the instructions in “Opening and closing the case” on page 46. The computer should be face-down on a soft, stable, non-marring surface before continuing.

6Locate the old battery on the system board and note its orientation (you will need to install the new battery the same way), then gently pry the battery up using a small, flat-blade screwdriver. The battery pops out of the socket.

Carefully pry with screwdriver here

7Make sure that the positive (+) side of the new battery is facing up (usually the side that the battery type and model number are etched into), then press the battery into the socket until it snaps into place.

8Reconnect all external cables and the power/data cable.

9Turn on your computer.

10While your computer starts, press and hold the F2 key. The main menu of the BIOS Setup utility opens.

11In the BIOS Setup utility, restore any settings that you wrote down in Step 3.

12Save all your settings and exit the BIOS Setup utility.

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