Close Win7 login welcome interface Direct access to the system

I have installed a Win7 system for my friend's computer. There is no problem in other places. Only when I turn on the computer, even if I don't set the power-on password, I will enter the user login interface first. It is not convenient to click the login to enter the system. Is there any way to pass the Win7 login welcome interface, boot directly into the system desktop? In the Win7 control panel found a circle did not find the relevant settings, and finally searched on the Internet, finally found a way to close it, I can't think of hiding it So deep, it's no wonder that you can't find it in the control panel by entering the command to open the settings.
Want to cancel the login welcome screen after Win7 boot, enter the system directly, you need to press the “Win+R” key in Win7 to open the run dialog.

Open Win7 Run dialog box
Then enter "ldquo;control userpasswords2" in the command box (without quotes), press Enter to open the User Account dialog box, "To use this machine, The user must enter the username and password & rdquo; the previous checkmark is canceled, and finally click the “OK” button to save the settings.

Open Win7 User Account Dialog Box
Restart it and try it? The annoying login interface will never appear again!
Small Tip:
If the computer has multiple accounts, Not only do you use it alone, it is recommended to keep the login interface better, so each user can only log in with their own username and password, which can prevent their private files from being seen by others.