Often you can work out networking problems simply by checking out everything as far as hardware and doing simple ipconfig commands. If you are an advanced user, you can use the netsh trace show scenarios command at the command prompt (run the command prompt as an administrator).
Troubleshooting a Wireless Network (WLAN) – To show details of the scenario
netsh trace show scenario name=WLAN
To start the scenario
Type Netsh Trace Start Scenario=WLAN
To stop the trace Type Netsh Trace Stop (There will be a long pause and a file will be generated.)
A Cab file will be generated which can be extracted and a HTML can then be opened up as a report. (Note the file location in the above picture).
Report Menu in HTML
Firewall output information. This information is very detailed and may provide clues when troubleshooting Windows.