Did you just pick up a Breakthrough Chromebook and it's not turning on?
If this HP Chromebook is a G8, this article will teach you how to solve this problem.
1. If this is HP Chromebook is a G8, the power button will be located in the upper right of the keyboard as shown below.
2. If it is a G8, plug in the Chromebook for at least five minutes. The G8 model will not turn on at all until the battery is charged up a bit.
3. After waiting five minutes, press the power button. The Chromebook should turn on.