Compaq Armada 7400 Reference Manual page 90

Once you create a setup password, you can only change the
password after the computer has restarted and you are prompted to
enter the current setup password.
To change your password, type in the old password, then enter the
new password twice, typing the syntax for your computer
keyboard between the passwords.
For example, if you have a Belgian keyboard, type the following:
The new password takes effect the next time you turn on your
computer.
Once you create a setup password, you can only delete the
password after you press to get to Computer Setup and you
are prompted to enter the current setup password.
Once your have entered the current setup password, you can delete
it using the computer keyboard. The keyboard symbol for deleting
the setup password varies according to the language of the
keyboard purchased with the computer.
To delete your password, type in the old password and the
keyboard password symbol, then press
Once you create a setup or power-on password, you can only
delete that password after the computer has restarted and you are
prompted to enter the current password.
Once you have entered the current setup or power-on password,
you can change or delete that password. The keyboard symbol for
changing or deleting the setup or power-on password varies
according to the language of the keyboard purchased with the
computer.
Security