How to replace the lithium CMOS battery.
- Shut down the computer.
- Turn off all peripheral devices and unplug the computer.
- Remove the cover from the computer.
- Locate the CMOS battery in the middle of the motherboard.
- Gently pry the battery from the socket [FIG.1].
- Install the new battery with the plus + side up.
- Reinstall the cover.
NOTE: The BIOS setting will be restored to their defaults when the battery is replaced. The date, time, passwords and any other custom settings will need to be re-entered in the BIOS.
- Power on the computer.
- At the Sony screen, press DELETE.
- Set the time, date and any other desired settings.
- Press ESC to return to the main BIOS window and then use the ARROW keys to highlight SAVE and EXIT SETUP [FIG.2] and then press ENTER.
- At the prompt to Save to CMOS and EXIT, type Y and then press ENTER.
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