Thank you for your contacting and support.
1. please make sure that you have charged the player .
when charging, you should switch on the power button on the top of the player，and the green light on the charger will light.
the Green light will turn out after a full charge.
You can charge the player with the wall charger or your PC( both ways need the USB cable to connect)
you can also set the power save function to make the playing time longer.
2. Please check whether you have set the darkness or blackness. please also reset it.
Any other questions please feel free to contact us on https://help.tinydeal.com/contact-us. And we would answer you within 24 hours.
Have a nice day!