how to setup system password ?

press "F12" key when your system is switching on u can see it in bellow fig

in above fig you can see that F12 function at top right corner.strike f12 key when it appears then you get a message box as bellow

select "enter setup" then setup box will open which is look like bellow fig

from above menu select security which is third option in that select set system password enter your new password to create and repeat it again which is shown above and press enter it asks to continue press enter now main thing is that enable the password on boot after that dont forget to save changes.

now restart your computer then password will ask on boot time which is as bellow

Note:-don't change any settings which you don't know and if you want yo change your password 

first password is must needed don't forget that .