diagnostic policy service not running - windows 7

When you try to start a Windows Service such as the Windows Firewall, DHCP client, or Diagnostic Policy Service, you may get the following error:

Windows could not start the Windows Firewall, DHCP client, or Diagnostic Policy on Local Computer. For more information, review the System Event Log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code 5.