What if you don't know the password and you want to log in?
Here is the solution to the above problem:
1. At the welcome screen press the combination of ctrl + alt + del twice.
2. A window with classic input of username and password appears, know in the user name section write
"Administrator"
excluding "
3.Leave the password section blank.
Boom !!
you just logged in as administrator.
Note :
This trick may not work if administrator name is changed at the time of setup.
Enjoy