by hackattack142 » 12. May 2012 16:24
Typically the System process uses PID 4. The common blocking service usually ends up being the World Wide Publishing service. Go to your Windows Services (Start > Run > services.msc), see if there is a 'World Wide Publishing' service, right-click it to get the Properties, click 'Stop' if it is running, change it from 'Automatic' to 'Disabled', then click okay.
You can see all the processes in your Task Manager by checking the 'Show processes from all users' box at the bottom of the 'Processes' tab.