How to Delete Windows Login - Step by Step Guide
1. Log in to a user account that has administrator privileges.
2. Click on the Start button to open the Start Menu and click on the Run command.
3. In the text box of Run Dialog Box, type "control userpasswords2" without the quotes.
4. You will get a User Accounts Dialog box with two tabs: Users and Advanced.
5. Click on the "Users" Tab (See Fig 1 below), and uncheck the option "Users must enter a name and password to use this computer".
6. Click OK.
7. You will be prompted for a default username and password (see Fig 2). Enter the username that you wish to use or keep the default user "Administrator" already displayed in the Username field. In the Password field and Confirm Password field, type in the related password. If you do not want any password, simply press Enter in both fields. Click OK to delete Windows Login.
TIP: You can also use this dialog box to remove unwanted profiles. Click on the "Advanced" tab and then click Advanced button. Double click Users folder (See Fig 3) in the left pane of the Advanced Dialog box to see all the users, including the hidden ones.
NOTE: On the contrary, if you wish to increase the security of your computer where it is used by multiple users, you can use the same dialog box to increase the security. You can remove the default Windows login that lists all the users by way of icons on the screen. When you click the Advanced tab on the dialog box, the last section has the option to use the traditional method of logging in, where instead of icons, users are required to press CTRL + ALT + DEL to access the Windows Login Dialog where they have to type in both their username and password. Thus, the same dialog which helps you to delete Windows login also helps you increase the security by checking the option "Require Users to Press Control+Alt+Delete" under the Advanced tab (see fig 3, left dialog box).
As you now know how to delete Windows Logon, you can also remove other standard and system user profiles (except Administrator, IWAM_CENTRAL, and the one you used in step number 7, as they are required for proper functioning of the computer).