HP Compaq dc7100 DT Hardware Reference Manual page 53

Hardware Reference Guide
16. Reconnect all external devices, plug the power cord into the
power outlet, and turn the computer on.
17. Using Computer Setup:
a. Reset the date and time.
b. Reset your passwords.
c. Reset any special system setups.
d. Enable the Smart Cover Sensor, if necessary.
Refer to the Computer Setup (F10) Utility Guide on the
Documentation CD for more information.
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Battery Replacement
B-5