Compaq D51s Troubleshooting Guide - Page 70

Clearing and Resetting the CMOS, Using the CMOS Button

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Password Security and Resetting CMOS 6. Replace the computer cover or access panel. 7. Reconnect the external equipment. 8. Plug in the computer and turn on power. Allow the operating system to start. This clears the current passwords and disables the password features. 9. To re-enable the password features, repeat steps 1-4, then replace the jumper on pins 1 and 2. 10. Repeat steps 6-8, then establish new passwords. See the Computer Setup (F10) Utility Guide for Computer Setup instructions. Clearing and Resetting the CMOS The computer's configuration memory (CMOS) stores password information and information about the computer's configuration. Using the CMOS Button 1. Turn off the computer and any external devices, and disconnect the power cord from the power outlet. 2. Disconnect the keyboard, monitor, and any other external equipment connected to the computer. Å WARNING: To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet, and allow the internal system components to cool before touching. Ä CAUTION: When the computer is plugged in, the power supply always has voltage applied to the system board even when the unit is turned off. Failure to disconnect the power cord can result in damage to the system. Troubleshooting Guide B-3

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Troubleshooting Guide
B–3
Password Security and Resetting CMOS
6. Replace the computer cover or access panel.
7. Reconnect the external equipment.
8. Plug in the computer and turn on power. Allow the operating
system to start. This clears the current passwords and disables the
password features.
9. To re-enable the password features, repeat steps 1-4, then replace
the jumper on pins 1 and 2.
10. Repeat steps 6-8, then establish new passwords. See the
Computer Setup (F10) Utility Guide
for Computer Setup
instructions.
Clearing and Resetting the CMOS
The computer’s configuration memory (CMOS) stores password
information and information about the computer’s configuration.
Using the CMOS Button
1. Turn off the computer and any external devices, and disconnect
the power cord from the power outlet.
2. Disconnect the keyboard, monitor, and any other external
equipment connected to the computer.
Å
WARNING:
To reduce the risk of personal injury from electrical shock
and/or hot surfaces, be sure to disconnect the power cord from the wall
outlet, and allow the internal system components to cool before
touching.
Ä
CAUTION:
When the computer is plugged in, the power supply always
has voltage applied to the system board even when the unit is turned
off. Failure to disconnect the power cord can result in damage to the
system.