If the LED remains off, check that the cable is properly connected to the PC.
If the LED is on, switch the system off by opening the magnetic button. Switch the system back on and check that the green LED lights up. If it does not light up, Click here to contact Us.
If the LED comes on, leave the device to charge for 4 hours. At that point the light will turn green and the system will be ready for use. If it does not turn green, contact customer service for a system check.