lets start,
first ,go to "start" in the go to "run " and type " cmd.exe"
you will see a [black box]
this is where from which you will be changing the password
now , type " net users " (without quotes) and hit ENTER
you will see the users name ,choose one of them which you want to hack
again ,type ..."net users (users name) " and hit ENTER
you will see something like this

click on the image to see full size
you have to be fast if you dont want to get caught ..
To see of the admin is allowing us to replace the password with old
Type , " net users (user name ) and hit ENTER

click on the image to see full size
if it says NO then the password can't be change :(
(try to access in safe mode )
OK , now the fun begins .
type "net users (press & hold SHIFT_KEY and press 8 )
you will get a star and ENTER

BECAREFULL over here
becaouse the password your typing will not be see to you
so see what password you are going to type .
after typing the password press ENTER and will will have to confirm the password
so type it again

click on the image to see full size
if everthing goes right you will see this " THE COMMAND COMPLETED SUCCESSFULLY "
and type " exit " to close the window
so here's it ur friends password is hacked and he didn't even knew it
THe most important thing to do now " RUN AS FAST AS YOU CAN ,SO THAT YOUR FRIEND WILL COME TO KNOW THIS "
wish you liked my post
HAPPY HACKING .