To enable the option, launch HP Wireless Assistant. Press the "Wireless" button on your HP notebook. This lets you change the status of wireless devices.Up to and including Windows 7, only the HP Wireless Assistant and HP Connection Manager apps are supported. To enable the option, launch HP Wireless Assistant. Press the "Wireless" button on your HP notebook. This lets you change the status of wireless devices. From the Start screen, type device manager to open the Search charm, and then select Device Manager from the search results
Installing HP Wireless Assistant:-
Go to the HP Drivers and Downloads page for your model.
Follow the on-screen instructions. ...
Click your operating system under Select operating system.
After clicking the operating system, locate and select Download HP Wireless Assistant.