I am the person that will be helping you today.
Often time, the Kindle may be frozen with an empty screen. Press and hold the power button for 15 seconds, let go of the button, wait 5 seconds, press the power button 1 or 2 seconds to turn it back on. Did that change anything? If not, plug in the charger and let me know whether or not the charger light on the power button turns on or not.
I will be standing by, looking forward to your response.