I have an HP Envy with built in leap motion. Ever since I upgraded to windows 10, my leap motion is not working at all. the only indication that it is on my laptop is that I can see the device on my laptop but that is it.
The upgrade process to Windows 10 usually causes issues with the Leap Motion software. Please try uninstalling the Leap Motion software and reinstall the V2 software from www.leapmotion.com/setup