Clearing And Resetting The Cmos - Compaq 100eu - All-in-One PC Maintenance & Service Manual

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 establish new passwords, repeat steps 1 through 4, replace the password jumper on pins 1
and 2, then repeat steps 6 through 8. Establish the new passwords in Computer Setup.

Clearing and Resetting the CMOS

The computer's configuration memory (CMOS) stores information about the computer's configuration.
The CMOS jumper resets CMOS but does not clear the supervisor and user passwords.
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.
WARNING!
sure to disconnect the power cord from the wall outlet, and allow the internal system
components to cool before touching.
CAUTION:
the system board even when the unit is turned off. Failure to disconnect the power cord can
result in damage to the system.
Static electricity can damage the electronic components of the computer or optional equipment.
Before beginning these procedures, ensure that you are discharged of static electricity by briefly
touching a grounded metal object
3. Remove the computer cover or access panel.
CAUTION:
important to back up the computer CMOS settings before resetting them in case they are
needed later. Back up is easily done through Computer Setup.
4. Locate the header and jumper.
NOTE:
the Illustrated Parts & Service Map (IPSM) for that particular system. The IPSM can be
downloaded from http://www.hp.com/support.
CAUTION:
the CMOS while power is connected can damage the system board.
5. Remove the jumper from pins 1 and 2. Place the jumper on pins 2 and 3.
6. Place the jumper back on pins 1 and 2.
7. Replace the computer cover or access panel.
8. Reconnect the external devices.
9. Plug in the computer and turn on power.
To reduce the risk of personal injury from electrical shock and/or hot surfaces, be
When the computer is plugged in, the power supply always has voltage applied to
Resetting the CMOS jumper will reset CMOS values to factory defaults. It is
For assistance locating the CMOS jumper and other system board components, see
Make sure you have disconnected the AC power cord from the wall outlet. Clearing
Clearing and Resetting the CMOS
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