Welcome to the community, Poonam15!
I'm sorry to hear about your WD drive problems!
It sounds to me like you're encountering some permission issues, though. I'd recommend you to take a look at this tutorial from our knowledge base and see if it will help you resolve them:
http://products.wdc.com/support/kb.ashx?id=nYTyNs
You'd need to take ownership of the files and folders in your WD drive.
Keep me posted! Hope this helps you though!
SuperSoph_WD