Take a deep breath, MikiBroki, it may just be a flat battery. Before you panic try plugging it into the wall charger and letting it do a full charge cycle (wait until the little red light over the power switch goes out), should take no more than 4 hours.
If you haven't been using your Reader for a while, the battery may have drained completely, and the 500 model won't charge from USB if the battery is too low.
Try that and let us know what happens, and we'll go from there, okay?
