Want to connect your Windows PC or laptop to a Wi-Fi network but you’re having problems? Try checking that wireless connectivity has been enabled on your device.
Here’s how to turn on or off wireless connectivity in Windows 7
Click the Network and Internet category and then select Networking and Sharing Centre.
From the options on the left-hand side, select Change adapter settings.
Also Read: How to turn on WIFI via the Command Prompt “CMD”
Right-click on the icon for Wireless Connection and click enable. You’ll now be able to connect to a Wi-Fi network from the Network and Sharing centre.