If you want your account to automatically login on Windows 7 do the following:

1. Press the Windows key + r on your keyboard to open the “Run” window.
2. Enter control userpasswords2 press return.
3. The User Accounts window will open.
4. Uncheck the box “Users must enter a user name and password to use this computer”
5. Click “ok”
6. Enter your current password twice – click ok.
7. Reboot to test that auto login works..