HP a307x, a300n manual Closing the computer

3Disconnect the power cord and all other attached cables (such as the keyboard, mouse, and monitor).

4Remove the side panel (see “removing the side panel” on page 121).

5If necessary to reach the battery, remove the drive cage (see “removing the drive cage” on page 123).

6If necessary to reach the battery, remove the fan duct (see “removing the drive cage” on page 123).

7If any cards restrict access to the battery:

•Remove the add-in card bracket. (See 7–9 of “installing add-in cards” on page 128.)

•Remove the cards that are on or near the battery.

8With a pen or screwdriver, press the metal latch that holds the battery in its socket. The battery will pop out.

9Install the new CR2032 battery in the socket, with the positive (+) side facing up.

To reassemble the computer:

1Replace any cards that you removed, and then replace the add-in card bracket.

2Replace the drive cage, fan duct, and side panel (see “closing the computer” on page 140).

3Reconnect the power cord and all other cables.

4Reconnect the modem/telephone cable.

5Turn on the computer and all peripherals.

6Run the BIOS setup program to reset the date and time.

closing the computer

After you have finished installing memory or drives, inserting or replacing add-in cards, or changing the battery, you need to replace the drive cage, the fan duct, and the side panel.

140user’s guide