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Turning your device on/off
There is a power button next to the LED indicators. When you press and hold the power button for a second, the device will be turned on. When the device is turned on, the battery status LEDs will light up.
To turn on the device, press and hold the power button just for a few more seconds, probably 3-4 seconds. The device will be turned off when the LEDs fades.
When we connect the device with PCs or any other power source over USB, HoloLens will turn on automatically. HoloLens will also turn off automatically when the remaining battery power drops below 2%.