WD Elements 320 GB/Go portable hard drive is not working

I need help to first understand what is wrong with my hard drive. I have plugged my hard drive in my computer. It doesn’t launch a window where I can see my files. I can see a steady light and noise inside the hard drive as if it was working but I cannot open the hard drive where my files are stored. Please can anyone help me fix my hard drive and recovery all my files. Thank you.

You may want to post your topic in this sub-forum.