HP xw4600 Service And Technical Reference Manual page 58

To change the power button configuration:
1. Select Start, and then select Control Panel>Power Options.
2. In Power Options Properties, select the Advanced tab.
3. In the Power Button section, select Hibernate. (Hibernate must be enabled in the Hibernate
tab.)
After configuring the power button to function as a button, press the power button to put the system in
a very low power state. Press the button again to bring the system out of this very low power state to
full power state. To completely turn off all power to the system, press and hold the power button for four
seconds.
CAUTION:
responding; turning off the power without operating system interaction could cause damage to or loss
of data on the hard drive.
50 Chapter 3 System management
Do not use the power button to power off the workstation unless the system is not
ENWW