I'm using the HTC Vive pro only for VR racing games on PC. I'm controlling the game menu with my mouse and keyboard on the monitor screen and I only need the VR while in game. Do I still need the base station and controller? I've already installed Vive pro and steam VR but the headset doesn't seem to be working. The only thing I see in the headset is a blue screen. The speakers seem to be working properly but I can't get beyond the blue screen. Can anyone please help me? Thanks a lot!