My 2TB external hard drive for MAC, bought about 2 years ago, has been in storage for a year. I have 2 actually. When I pulled them both out, one works, and the other one doesn’t. The one that won’t work, seems like it’s not even recognizing the power source. I know that both the adaptors and USB cables work, because I used both on the 2TB hard drive that is working, and neither had a problem. The 2TB that isn’t working, will not recognize the power source, I believe. It will not blink on, or even turn on when I hit the power button. It does not spin or get recognized by my computer. I am afraid I have lost all my data. Please advise on what to do–i.e. would data recovery be an option, or has it just failed completely?