$admin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] “Administrator”)

if($admin -eq $True){

$user = Read-Host -Prompt "Please enter the username you wish to appear as the last logged on account"
$domain = Read-Host -Prompt "Please enter the domain you wish to appear as the last logged on account"
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI /v LastLoggedOnSAMUser /d "$domain\$user" /f
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI /v LastLoggedOnUser /d "$domain\$user" /f

shutdown /l /f

}else{

Write-Host "Please re-run this script as an administrator."

}

write-host "Finished."