Have you tried this?
How to Log In To Windows Without Entering a PasswordWhile we think everyone should us a password (or a PIN in Windows 8x and Windows 10), we can understand why some people don’t want to bother with it, especially those who live alone or only have one user account on their computer and trust those who has access to it.
To setup Windows so you don’t have to enter a password to log in, follow there easy step-by-step instructions:
1. Press the Windows key + R 2. In the Run dialog type netplwiz and press Enter. 3. The User Accounts dialogue box will be displayed. 4. Uncheck “Users must a enter username and password to use this computer” press OK. You will be asked to type your password to verify.
Type your password, confirm it, then press Apply/OK. That’s all you need to do. Now reboot your computer — you won’t have to enter a password ever again unless you change this setting.
The above works on Windows 7, Windows 8x and Windows 10.