If you want to speed up the log-in process by disabling the username and password log-in screen.
You can do so by opening the Run window (press the Windows key + R) and typing in "netplwiz" to access the User Accounts dialog box.
Uncheck the box near the top that says "Users must enter a user name and password to use this computer." Click OK, and enter the username and password one last time to confirm your choice.
It is done you are all set for easy access to your system.