Resetting The Password Jumper; Clearing And Resetting The Cmos; Using The Cmos Button - HP Z400 - Workstation Maintenance And Service Manual

Resetting the password jumper

Use the following procedure to disable the power-on or setup password features and clear the power-
on and setup passwords.
WARNING!
the power cord from the wall outlet and let the internal system components cool before touching.
CAUTION:
board, even when the workstation is turned off. Failure to disconnect the power cord can result in
damage to the workstation.
CAUTION:
equipment. Before beginning these procedures, be sure that you are discharged of static electricity by
briefly touching a grounded metal object.
1. Shut down the operating system, power off the workstation and external devices, and disconnect
the workstation power cord and external devices from power outlets.
2. Disconnect the keyboard, monitor, and other external devices that are connected to the
workstation.
3. Remove the access panel.
4. Locate the password header and jumper.
The password header is E49. The password jumper is green so it can be easily identified.
5. Verify that the AC power cord is disconnected from the power outlet.
6. Remove the jumper from pins 1 and 2.
7. Replace the access panel.
8. Reconnect the external equipment.
9. Reconnect AC power to the workstation.
10. Power on the workstation.
11. Wait for the workstation to display the HP splash screen.
12. Repeat steps 1 through 5.
13. Replace the jumper from pins 1 and 2.
14. Repeat steps 7 through 10.
15. Wait for the workstation to boot to the F10 (Setup) Utility.
16. Use the F10 (Setup) Utility to create the new passwords.

Clearing and Resetting the CMOS

This section describes the steps necessary to successfully clear and reset the CMOS. The CMOS of
the workstation stores password information and information about the workstation configuration.

Using the CMOS Button

To clear CMOS using the Clear CMOS button, use the following procedure:
186 Chapter 8 Configuring password security and resetting CMOS
To reduce the risk of personal injury from electrical shock and hot surfaces, disconnect
When the workstation is plugged in, the power supply has voltage applied to the system
Static electricity can damage the electronic components of the workstation or optional
ENWW