Please help!

I’m not sure if I’m posting this in the correct place but hopefully someone will be able to help me.  I have a My Book model number WD10000G032.  I have had it for a couple years.  I went to access it and was unable so I went to turn it off and restart it.  It would not turn off so I unplugged it.  Now when I plug it in you can feel the drive doing something but the light does not come on (2 blue rings) and I cannot access it.  My computer will not even register that it exists.  This was from when I had my business and there is information on it that I need to have.  Is there a way to recover the information or even get it working properly again?

What OS are you using now and did you use it on a different OS before? Have you used it before on this PC without problems? Did you try changing USB ports one on the back is preferable? Also try plugging directly into a receptacle instead of a pwoer strip.