Wi-Fi - How to Disconnect From a Wireless Network in Windows 7
How to disconnect from a wireless internet connection in Windows 7.
1.) To disconnect from a network, left click the wireless symbol 
on the task bar and this will open a small window above it.
on the task bar and this will open a small window above it.
2.) Clicking on the "Connected" network, in this case the "Parkland" network, will give you the option to disconnect.
3.) Clicking the "Disconnect" button will disconnect you from this network. To reconnect, follow the first two steps and then select "Connect" as shown below.
