Hmm, very interesting. I held down the button when plugging it in, and it resulted in the infamous blinking red lights. Then steamVR indeed told me to enter my password for some sort of setup. I did that, but I stead on installing some firmware or something, it just started StaemVR like usual, but this time not the headset, nor the base stations show up. It has a small error window over it, which says that it could not detect any headset. This is easily resolved by just replugging the index power cable, but that just gets me back to where I started (all devices show up as they should and SteamVR just pretends that everything is working perfectly, while nothing is being displayed in the headset).