3.To access the battery on the system board, rotate the power supply as described in "Rotating the Power Supply Away From the System Board".

NOTE: If a CD-ROM drive or hard-disk drive in the upper 5.25-inch drive bay obstructs your access to the battery, you may find it helpful to remove the front bezel and slide the drive forward slightly to provide more room for you to work. See "Removing and Replacing the Front Bezel" and "Installing a Drive in a

5.25-Inch Drive Bay" for instructions.

4.Locate the battery and remove it.

The battery is mounted in a socket labeled "BATTERY" at the upper front-right corner of the system board (as you face the side of the system) (see Figure 9-1).

CAUTION: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Make certain that the object is inserted between the battery and the socket before attempting to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board.

Pry the battery out of its socket with your fingers or with a blunt, nonconductive object, such as a plastic screwdriver (see Figure 9-9).

Figure 9-9. System Battery and Battery Socket

5.Install the new battery.

Orient the battery with the side labeled "+" facing up. Then insert the battery into the socket, and snap it into place.

6.Rotate the power supply back into position, making sure that the securing tab snaps into place.

7.Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on.

NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.

8.Enter the System Setup program, and confirm that the battery is operating properly.

See "Using the System Setup Program" for information on running the System Setup program. Enter the correct time and date through the System Setup program's Time and Date options. Also, restore the correct settings for the system configuration information using the copy made in step 1, and then exit the System Setup program.

9.While in the System Setup program, reset the chassis intrusion detector by changing Chassis Intrusion to Not Detected.

See "Using the System Setup Program" for instructions.

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

10.Turn off your computer, and unplug it for at least 10 minutes.

11.After 10 minutes, plug in the computer, turn it on, and enter the System Setup program. If the time and date are still incorrect, see the chapter titled "Getting Help" in your Diagnostics and Troubleshooting Guide for instructions on