To make a laptop or any Tablet PCs secure and protected from unauthorized access from the external network, i.e. Internet, the devices have a toggle switch button that turns on or off wireless network adapter at the hardware level.
Apart from the above, Windows 8 also allows users to turn on or off the Wi-Fi feature. When Wi-Fi feature is turned on or off at the operating system level, the requirement of doing so at the hardware level is completely eliminated. This increases the life of the hardware of the computer, hence allowing users to exploit the device for longer duration.
Video on how to turn Wi-Fi on in Windows 8 or Windows 8.1:
In order to turn Wi-Fi on, step-by-step instructions given below must be followed:
Log on to Windows 8 computer with the administrator account on which Wi-Fi is to be enabled.
Click Desktop tile from the Start screen to go to the desktop screen.
Once on the desktop screen, hover mouse to the bottom right corner of the window.
From the displayed options, click Settings.
From the bottom of the Settings pane, click Change PC settings.
On PC settings window, click to select Wireless option from the left section.
From the right section, click the button that represents Off under Wireless devices section to enable the Wi-Fi in Windows 8 computer.