Turn off automatic logon in Windows 7

If there are multiple user accounts and upon starting your computer, if you do not see the screen to select a user account to login, this means the automatic logon feature is turned on. Once you turn off this, you will have all the user account names displayed in the welcome screen. To turn off automatic logon, perform the following steps:
1. Click Start button. In the Search programs and files field, type netplwiz and press the Enter key from the keyboard. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
2. Under Users tab, click to place the checkmark beside Users must enter a user name and password to use this computer.
3. Click Apply and then click OK.