Well, check if you have plugged in the power adapter. After trying to dig out all the wires and move the power source closer, I ended up re-arranging many of the adapters and in the process had left the Onetouch’s adapter lying on the carpet in the mess of wires. Got out and after couple of hours wanted to initiate a backup and the One Touch wouldn’t power up. I looked up reviews on Amazon as I had read about some people complaining external hard drives crashing and not powering up. Almost ready to add a comment, checked the adapter again and found it wasn’t plugged in! 🙂 Problem solved, but at an expense!