The power LED turns on as soon as I plug the adapter in the socket. But after about 30 seconds, the power LED starts blinking. Another 30 seconds later it just switches off and I can't turn it on using the power button. 

I tried connecting it to a different socket, didn't make a difference. I tried to hard reset it using the button, but that's not happening either. It switches off even before I can access the internet. 

Any suggestions?