Seagate Agent Seagate Free Agent Desktop 500 GB USB External Hard Drive Is Not Working?

Seagate Free Agent Desktop 500 GB USB External Hard Drive is not working? - seagate agent

Seagate FreeAgent Pro 500 GB external hard drive is not working ....
I think it is completely dead.
How can I change my data ..

The big problem is when the drive is plugged into my computer, USB hard drives not recognized by my pc.it `s not in my pc ...

Please help me get back to my Seagate FreeAgent Pro 500GB external hard drive

thankyou