This is what I emailed WD two days ago: I was working away like normal yesterday, and I received a prompt dialogue on my mac telling me about an improper device removal. I had no other things plugged into my usb ports, so it was the HD. It then shut off, then restarted again. The indicator light is on and green, and I can hear it working inside. There is no clicking or no strange noises of any kind. There simply isn't an icon showing up on my screen for the drive. I've tried installing it on other computers, but there was no response. I switched out the USB cable, and still no response. Now, whenever I plug the power in, the indicator light flashes for a second, then turns off.