$root = "LDAP://DC=domainname,DC=local"

$objDomain = New-Object System.DirectoryServices.DirectoryEntry($root)
$objSearcher = New-Object System.DirectoryServices.DirectorySearcher
$objSearcher.SearchRoot = $objDomain
$objSearcher.PageSize = 1000
$objSearcher.Filter = "(objectCategory=Computer)"
$objSearcher.SearchScope = "Subtree"

$colProplist = "name", "distinguishedname"
foreach ($prop in $colProplist) {
  $objSearcher.PropertiesToLoad.Add($prop) | out-null
}

$colResults = $objSearcher.FindAll()
Write-Host "Found $($colResults.count) computer(s)"

foreach ($objResult in $colResults) {
  $objItem = $objResult.Properties

  $objComputer = [ADSI]"LDAP://$($objItem.distinguishedname)"

  If (!$objComputer.PsBase.InvokeGet("AccountDisabled")) {
    Write-Host $objItem.name
  }
}