Clearing And Resetting The Cmos; Using The Cmos Button - HP xw9400 Service And Technical Reference Manual

Clearing and resetting the CMOS

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

Using the CMOS button

1. Shut down the operating system, and power off the workstation and any external devices.
Disconnect the power cord of the workstation and any external devices from the power outlets.
WARNING!
be sure to disconnect the power cord from the wall outlet and allow the internal system
components to cool before touching.
CAUTION
to the system board–even when the unit is turned off. Failure to disconnect the power cord
can result in damage to the system.
CAUTION
optional equipment. Before beginning these procedures, be sure that you are discharged of
static electricity by briefly touching a grounded metal object.
2. Remove the access panel.
3. Locate and press the clear CMOS button.
CAUTION
erases some customized information. It is important to back up the workstation CMOS
settings before resetting them in case they are needed later. To back up the CMOS settings,
use the Replicated Setup option in the Computer Setup Utility menu.
For assistance locating the clear CMOS button and other system board components, refer to the
service label on the workstation access panel.
NOTE
The clear CMOS button does not clear the workstation passwords.
4. Replace the access panel.
5. Plug in and power on the workstation.
NOTE
ENWW
To reduce the risk of personal injury from electrical shock and hot surfaces,
When the workstation is plugged in, the power supply always applies voltage
Static electricity can damage the electronic components of the workstation or
Pushing the clear CMOS button resets CMOS values to factory defaults and
AC power does not need to be disconnected for the clear CMOS button to work.
Any special configurations will have to be reset.
Clearing and resetting the CMOS 177