See "Using the System Setup Program".

11.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.

12.If you installed a second processor and your system is running Windows NT 4.0, reinstall the operating system. See your Windows NT documentation for instructions.

When you reinstall Windows NT 4.0, the operating system detects the second processor.

13.Run the Dell Diagnostics to verify that the new processor is operating correctly.

See your Diagnostics and Troubleshooting Guide for information on running the diagnostics and troubleshooting any problems that may occur.

Replacing the System Battery

A 3.0-V CR2032 coin-cell battery installed on the system board maintains system configuration, date, and time information in a special section of memory.

The operating life of the battery can extend up to 10 years. The battery may need replacing if an incorrect time or date is displayed during the boot routine along with a message such as:

Time-of-day not set -- please run SETUP program

or

Invalid configuration information -- please run SETUP program

or

Strike the F1 key to continue,

F2 to run the setup utility

To determine whether the battery needs replacing, reenter the time and date through the System Setup program and exit the program properly to save the information. Turn off and unplug your system for a few hours, and then plug in and turn on your system. Enter the System Setup program. If the date and time are not correct in the System Setup program, replace your battery.

You can operate your system without a battery; however, without a battery, the system configuration information maintained by the battery is erased if the system is unplugged or AC power is lost. In this case, you must enter the System Setup program and reset the configuration options.

WARNING

There is a danger of the new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.

Use the following procedure to replace the system battery with another CR2032 coin-cell battery:

1.If you have not already done so, make a copy of your system configuration information in the System Setup program.

If the settings are lost while you are replacing the battery, you can refer to your written or printed copy of the system configuration information to restore the correct settings. See "Using the System Setup Program" for instructions.

2.Remove the computer cover according to the instructions in "Removing the Computer Cover".

CAUTION: See "Protecting Against Electrostatic Discharge".