Go to the Start Menu and click Run:
In the Run text box, type control userpasswords2 and click OK:
Uncheck the checkbox that says "Users must enter a user name and password to use this computer.":
Click the Advanced tab and uncheck "Require users to press Ctrl + Alt + Delete":
Click OK
When the dialogue box pops up, type in your username and password (if you do not have a password, leave it blank)