net localgroup Users /Add user
net localgroup administrators /delete User
%SystemRoot%\system32\reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "DefaultUserName" /d "USER" /f
%SystemRoot%\system32\reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "DefaultUserPassword" /d "" /f
%SystemRoot%\system32\reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "AutoAdminLogon" /d "1" /f