How strange, I've tried it on both my stationary and my laptop and it works fine on both. It should just be to press E from player, and as the drone you move using WASD as well, and steer with the mouse. And E only works in some places for the drone, you will get a text pop-up for that. I can't think of a reason it wouldn't work I'm sorry to say. Only, download and try again? Sorry I can't help more :(