First make sure the device is on by pressing the power button on the left side of the HoloLens, at the very back. An array of LEDs next to the button will light up, showing the current battery level.[caption id="attachment_145" align="aligncenter" width="600"]

The power button and battery status LEDs are pictured here, at the back left of the HoloLens.[/caption]To put on HoloLens, please carefully follow the instructions from https://support.microsoft.com/en-us/help/12632/hololens-fit-your-hololens. You risk breaking the HoloLens if you do not follow Microsoft’s steps.Be very careful when putting on the HoloLens. Be sure never to touch any of its transparent parts, be it the lenses, visor, or screen. Make sure the headband sufficiently hugs your head to ensure the HoloLens does not fall off. The nosepiece doesn’t need to rest on your nose, but you may find it the most comfortable or the best way to view the screen.