How to fix NPK driver is not running in wireshark.

If you just installed wireshark on a windows machine for the first time, chances are that you get a message like NPK driver is not responding anytime you you try to capture some packets.
This simple procedure works perfectly for me.

1. Open command prompt by typing cmd in the search box
2. type: "sc start npf" without the quotes and press enter.
3. Now run this command so that it starts automatically "sc config npf start = auto" without the quotes and press enter.

That's it. you will not get that message again.