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As the system boots, it detects the presence of the new microprocessor and automatically changes the system configuration information in the System Setup program.

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See Chapter 2, “Using the System Setup Program.”

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For information on using the diagnostics and troubleshooting any problems that occur, see the chapter titled “Running the Dell Diagnostics” in your Diagnostics and Troubleshooting Guide.

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A3.0-volt (V) CR2032 coin-cell battery installed on the system board maintains sys- tem configuration, date, and time information in a special section of memory.

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

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To determine whether the battery needs replacing, reenter the time and date through the System Setup program (not through the MS-DOS time and date commands) and exit the program properly to save the information (see Chapter 2, “Using the System Setup Program,” for instructions). Turn off your system and disconnect it from AC power for a few hours; then reconnect 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 sys- tem configuration information is erased if the system is turned off or unplugged from

6-16 Dell OptiPlex G1 Midsize Managed PC Reference and Installation Guide