HP Model 743 PC - Manual (Page 125)

A-15
The Boot Console Interface
Booting and Resetting the Model 743
In most boot console menus, you can enter the following to reset the system
and return to the automatic boot process:
77 Enter
Resetting the System
The act of resetting your system causes it to restart completely. It is similar
to turning the system off and then back on again.
Reset the system by pressing the Rst/Abt switch on the front panel of the
Model 743 to the Rst (left) position.