Stop a windows service. Wait for the process to die. Option to kill it if it doesn't stop.

Stop-ServiceAndWaitForItToDie.ps1

function Stop-ServiceAndWaitForItToDie {
    [cmdletbinding()]
    Param( 
            [Parameter(Mandatory=$True,ValueFromPipeline=$True)] 
            [object] $Service,
            [Parameter(Mandatory=$False,ValueFromPipeline=$False)]
            [int] $TimeoutInSeconds = 30,
            [Parameter(Mandatory=$False,ValueFromPipeline=$False)]
            [Switch] $KillAfterTimeout,
            [Parameter(Mandatory=$False,ValueFromPipeline=$False)]
            [Switch] $Force
         )
    BEGIN {
        if ($TimeoutInSeconds -lt 0) { throw "TimeoutInSeconds must be greater than zero." }
    }
    PROCESS {
        if (-not $Service) { return; }

        $serviceName = $Service.Name
        $serviceProcessId = Get-WmiObject -Class Win32_Service -Filter "Name LIKE '$serviceName'" | Select-Object -ExpandProperty ProcessId
        if ($serviceProcessId -eq 0) { return; }
        Write-Host "Stopping service $serviceName with process ID #$serviceProcessId"
        Stop-Service $serviceName -ErrorAction SilentlyContinue -Force:$Force
        $process = $null
        $process = Get-Process -Id $serviceProcessId -ErrorAction SilentlyContinue
        $totalTime = [System.TimeSpan]::FromSeconds(0)
        while ($process) {
            Write-Debug "$totalTime and $($process.FileName)"
            if ($process.WaitForExit(100)) {
                Write-Debug "Service $serviceName is now stopped."
            }
            $totalTime = $totalTime.Add([System.TimeSpan]::FromMilliseconds(100))
            if ($totalTime.TotalSeconds -gt $TimeoutInSeconds) {
                if ($KillAfterTimeout) {
                    Write-Warning "Process for $serviceName did not shut down. Killing it..."
                    Stop-Process -Id $serviceProcessId -Force:$Force
                    Start-Sleep -Milliseconds 3000
                    ##Is it starting back up?
                    $Service = $null
                    $Service = Get-Service $serviceName -ErrorAction SilentlyContinue
                    if ($Service -and $Service.Status -ne [System.ServiceProcess.ServiceControllerStatus]::Stopped) {
                        while ($Service.Status -eq [System.ServiceProcess.ServiceControllerStatus]::StartPending) {
                            Start-Sleep -Milliseconds 100
                            $Service.Refresh()
                        }
                        $serviceProcessId = Get-WmiObject -Class Win32_Service -Filter "Name LIKE '$serviceName'" | Select-Object -ExpandProperty ProcessId
                        $Service | Stop-ServiceAndWaitForItToDie -TimeoutInSeconds 10 -Force
                    }
                }
                $process = $null
                $process = Get-Process -Id $serviceProcessId -ErrorAction SilentlyContinue
                break
            }
            $process = $null
            $process = Get-Process -Id $serviceProcessId -ErrorAction SilentlyContinue
        }
        if ($process) {
            throw "Could not stop the service. Nuke it from space."
        }
    }
}