Dell OptiPlex E1 - Manual (Page 102)

6-12 Dell OptiPlex E1 Mini Tower Managed PC Reference and Installation Guide
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A 3.0-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:
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 (see
Chapter 2, “Using the System Setup Program,” for instructions). Turn off your system
and unplug the power cable from the electrical outlet 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
the electrical outlet. In this case, you must enter the System Setup program and reset
the configuration options.
Use the following procedure to replace the system battery with another CR2032 coin-
cell battery:
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If the settings are lost while you are replacing the battery, refer to your written or
printed copy of the system configuration information to restore the correct set-
tings. See Chapter 2, “Using the System Setup Program,” for instructions.
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