Unnamed

  param( 
    [string] $Service = $(throw "Service required."),
    [string] $Server = $(throw "Server required."),
    [string] $DoThis = $(throw "DoThis required.") #throw exception if no value provided
  )
  
  
  $svc = get-wmiobject Win32_Service -computer $Server -filter "Name='$Service'" 
  
  if (!($svc)) { 
      Write-host "ERROR: No such service" 
      exit
  }

  switch ($DoThis) {
      "Start"   { $Result = $Svc.StartService() }
      "Stop"    { $Result = $Svc.StopService() }
      "Disable" { $Result = $Svc.ChangeStartMode("Disabled") }
      "Manual"  { $Result = $Svc.ChangeStartMode("Manual") }
      "Auto"    { $Result = $Svc.ChangeStartMode("Auto") }
      default   { Write-host "Usage: -DoThis [Start, Stop, Disable, Manual, Auto]" }
  }

  switch ($Result.ReturnValue) {
      0  { Write-host "Success" }
      5  { Write-host "ERROR: Cannot Stop, Service already Stopped" }
      10 { Write-host "ERROR: Cannot Start, Service already Started" }
      14 { Write-host "ERROR: Cannot Start, Service is Disabled" }
      default { Write-Host "ERROR: Something else happened, sorry. Return val = " $Result.ReturnValue }
  }