Sysinternals Autologon can be found here:
https://learn.microsoft.com/en-us/sysinternals/downloads/autologon
To do it manually, follow these steps:
Launch Registry Editor: Type regedit and hit Enter.
Access Autologin Key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Note: You can copy and paste the above path into the Registry Editor’s address bar to quickly access the key.
Configure Username: Right-click on Winlogon, select ‘New’ > ‘String Value’, name it DefaultUserName then enter the desired username.
Configure Password: Right-click on Winlogon, select ‘New’ > ‘String Value’, name it DefaultPassword then enter the corresponding password.
Activate Autologin: Right-click on Winlogon, select ‘New’ > ‘String Value’, name it AutoAdminLogon then set the value to ‘1’.
Reboot: Close the Registry Editor and restart your computer to apply the changes.