Stop service, if not possible kill

gistfile1.ps1

1:  function Kill-Service() {  
2:  param(  
3:    [Parameter(Mandatory=$true)]  
4:    [string]$srvcName,  
5:    [Parameter(Mandatory=$false)]  
6:    [string]$ComputerName='.',  
7:    [Parameter(Mandatory=$false)]  
8:    [string]$TimeOut='00:00:05'  
9:  )  
10:    $srvName  
11:    $ComputerName  
12:    $TimeOut  
13:    #Invoke-Command -cn $ComputerName -ArgumentList $srvcName -ScriptBlock {  
14:    Invoke-Command -ArgumentList $srvcName -ScriptBlock {  
15:      $svc = Get-Service $srvcName  
16:      if ($svc -ne $null) {  
17:        try {  
18:          Write-Host($svc.Name)  
19:          $svc.stop() # stoppe Service  
20:          $svc.WaitForStatus('Stopped',$TimeOut) # Warte $Timeout auf Stop von Service  
21:          Write-Host ('Service exited gracefully')      
22:        }  
23:        catch [System.ServiceProcess.TimeoutException] {  
24:          #sichere Service FailureActions  
25:          $regpath="HKLM:\SYSTEM\CurrentControlSet\Services\"+$srvcName  
26:          $before=(Get-ItemProperty -Path $regpath -Name FailureActions).FailureActions  
27:          Write-Host('Recovery Settings saved')  
28:          # ermittele PID des Service-Prozesses  
29:          $ServiceNamePID = Get-Service $srvcName  
30:          $ServicePID = (Get-WmiObject Win32_Service | Where {$_.Name -eq $ServiceNamePID.Name}).ProcessID  
31:          set-itemproperty -Path $regpath -Name FailureActions -Value ([byte[]](0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0xea,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0xea,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0xea,0x00,0x00))  
32:          Write-Host('Recovery Settings overwritten')  
33:          Stop-Process $ServicePID -Force  
34:          Write-Host('Process ' + $ServicePID + ' Killed')  
35:          #(Get-WmiObject -class win32_process -filter ('ProcessId = '+$ServicePID)).terminate()  
36:          set-itemproperty -Path $regpath -Name FailureActions -Value $before  
37:          Write-Host('Recovery Settings restored')  
38:        }  
39:        catch [Exception] {  
40:          write-host $_.Exception.GetType().FullName;   
41:          write-host $_.Exception.Message;   
42:        }  
43:      }  
44:      else  
45:      {  
46:      Write-Host('No Service returned')  
47:      }  
48:    }  
49:  }