How to change saved WiFi password on Windows 7?
Operating Systems | Windows
Open the Control Panel and click "Network and Internet".
Click "Network and Sharing Center".
Click "Manage wireless networks" on the left pane.
Right-click on the wireless network and click "Properties".
Click on the "Security" tab and edit the key in the "Network security key" field.
Go to your system tray icon (in your Task bar).
Click on wireless network icon, right-click the desired network and click "Properties".
Change the Network Security Key.
Windows 7, WiFi password, Wireless networks