=== Kill process / Stop hung service ===

  * Start CMD with administrative rights
  * Find  service you want to kill (in this case "spooler")

<code>
C:\Windows\system32>sc queryex | findstr /I spoo
SERVICE_NAME: Spooler
DISPLAY_NAME: Print Spooler
</code>
  * Now we know the right name of service (SERVICE_NAME: Spooler) and we can find its PID

<code>
C:\Windows\system32>sc queryex Spooler |findstr PID
        PID                : 3480
</code>
  * With known PID we can now kill the process
<code>
taskkill /f /pid 3480
SUCCESS: The process with PID 3480 has been terminated
</code>