wan miniport (network monitor)#2 broken

Hi, Avast latest version internet security started causing a load of issues and hangs after a month of working fine.
I have removed it ran the removal tool.
In device manager I have an ! on network monitor.
" wan miniport (network monitor)#2 error 31" cannot update or remove it
Any ideas how to fix this please?

“wan mini port” is part of Windows and not an Avast left over. Can you connect to the internet? Try this.

http://answers.microsoft.com/en-us/windows/forum/windows_8-hardware/broken-device-wan-miniport-network-monitor-2-code/ea780b5f-f193-4ce3-a3a4-034789c22d0b