WD My Book Essential Edition - Laptop Do not recognize My Book

I have a WD My Book Essential Edition External Hard Drive. I have not used it for more than a year. I connected it to the power outlet, connected the USB to my laptop Pavilion dv7 Windows 7. Then I start to hear that My Book is doing a noise like Hard Drive searching, then it suddenly stops. I see that the front led indicator is moving and then stay on completely like in idle. I look to the laptop and find that External Hard Drive is not visible in Windows Explorer / Computer path. Could you let me know how could I access the data there and make My Book visible? I tried with a different computer and I got the same. Also I bought a new power supply and a new USB 2.0 cable and nothing. Please help!

I ran the Data Lifeguard application. The quick test passed but extended test failed. It shows that have bad sectors. I selected “Repair” and software can’t do the repair and ask me to contact WD Support. Any clues?