Of course, having a (good) user password in Windows it is important to maintain security in the system, especially the tendency of that OS to give administrator rights to users by default.  In a laptop, it is highly recommended to keep the password each time you enter / leave the system because it is obviously much more exposed to possible theft.

But even if you don’t fill one in, you still have to click your user icon to start the login process. But if this is a home desktop PC, or an installation in a virtual machine, or simply do not have important data, nothing like activate the “auto login” to us let the computer directly to the desktop after a reset.

This tip works for both Windows 7 and Windows XP:

1. Press the Windows key + R on your keyboard to launch the “Run” dialog box.
2. Type in control userpasswords2 (for XP and Windows 7) and Netplwiz (for Vista)
3. Press Enter. The User Accounts window will display.
4. Uncheck the option “Users must enter a user name and password to use this computer”
5. Click “OK”
6. You will then be prompted to enter the current password and confirm it.
7. After doing so, you will no longer be prompted to enter your password upon login.