Is your Windows PC or laptop having problems
connecting to Wi-Fi networks? We show you how to
switch wireless connectivity on and off and
troubleshoot adapter settings.
Switch Wi-Fi On And Off
The basic process to switch your Wi-Fi on and off in
Windows 10 is nice and simple. Use the Wi-Fi icon
located in the system tray - the section to the far
right of the Taskbar. Click on the icon and here you
can toggle the Wi-Fi and choose from the different
available networks.

If there's no Wi-Fi icon in the corner then you've
either got an ethernet cable plugged in or the Wi-Fi
adapter is switched off. Here's how to switch it
back on.
• Go to the Start Menu and select Settings.
• Click on Networks & Internet.
• Select Wi-Fi on the left pane.
• Scroll down and click on Change adapter options.
• Right click on the Wi-Fi adapter and click Enable.
Source: http://www.legendbaze.com.ng/2017/09/how-to-turn-wi-fi-on-and-off-in-windows.html