Originally Posted by GlenBarrington
... The reset button doesn't seem to work either. The screen displays continuouly a "Charging Stopped" message. ...
This is normal, as the reset-button only shuts off the device. NOT clearing the screen - as one would expect. BTW this "feature" of e-ink - to hold a image infinite, without any power consumption, is used with StandbyImages"
You will have to restart the reader with the power-switch.
But as FizzyWater
wrote, a connected PC in standby can have drained your battery.
So recharge, preferred with a main-charger. Almost any cellphone charger with Mico-USB tip will do.