Create a local administrator account using PowerShell
$Username = "su"
$Password = "password"
$group = "Administrators"
$adsi = [ADSI]"WinNT://$env:COMPUTERNAME"
$existing = $adsi.Children | where {$_.SchemaClassName -eq 'user' -and $_.Name -eq $Username }
if ($existing -eq $null) {
Write-Host "Creating new local user $Username."
& NET USER $Username $Password /add /y /expires:never
Write-Host "Adding local user $Username to $group."
& NET LOCALGROUP $group $Username /add
}
else {
Write-Host "Setting password for existing local user $Username."
$existing.SetPassword($Password)
}
Write-Host "Ensuring password for $Username never expires."
& WMIC USERACCOUNT WHERE "Name='$Username'" SET PasswordExpires=FALSE