Hi moniduse,
Sorry to hear about this. Try a different data and power cable on the drive. If the issue still persists, then I would try and return it to the place of purchase since it appears that you just received the drives. If you can’t return it through the place of purchase, then I would submit an RMA.
How to get an RMA
http://wdc.custhelp.com/app/answers/detail/a_id/8
I didn’t see any location info in your profile so I included the link below if you are outside the US and Canada:
How to replace a product outside the US and Canada.
