Автоматический вход польователя:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"AutoAdminLogon" = dword:1
"DefaultDomainName"= "domain name"
"DefaultPassword" = "password"
"DefaultUserName" = "username"

Скрытие пользователя с экрана приветствия:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList]
"sandbox" = dword:00000000

Скрипт:

New-Item -Path "Registry::HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts"
New-Item -Path "Registry::HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList"
New-ItemProperty -Path "Registry::HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" -Name sandbox -PropertyType DWord -Value 0