Hp - Envy X360 2-In-1 15.6 Touch-Screen Laptop. The on/off button is usually shaped like a long, narr Equipped with a 15.6” touchscreen, it converts from a laptop to a tablet . Hp and other computer manufacturers use function (fn) keys on compact keyboards to combine two keyboard functions into one in order to save on space. Disable the touchpad on an hp laptop by pressing the button next to it or by turning off the sensors in the computer’s device properties settings. A laptop screen may go black for various possible reasons: There is a problem with the computer’s operating system, the screen brightness is set to a low setting or there is a problem with the display Hp widevision 720p hd camera with camera shutter and dual array digital microphone.