Stick the device on the charger and leave it there. It'll eventually power itself on into charging mode, after that, follow these instructions exactly: Plug the device into one of the USB ports on your computer. Start the flasher, and get it to the point where it's waiting for the device. Hold down the Home button, then while still holding down the Home button, press down the power key until the unit boots to a Nokia splash screen with a USB icon in the upper right. The flasher will then proceed to flash the device with the latest software, thus fixing the power-on issues.