WD 4TB MY BOOK Blinking white light and not recognized by my Windows 7 laptop

I’m not too tech savvy, but my Western Digital My Book all of a sudden stopped working. I was transferring files and a window popped up saying that the destination folder doesn’t exist. 

Now I have an external drive that just flashed a white light every second when plugged in. I did all of the obvious stuff like replace the USB cables and the AC Adapter. I tried it on two computers with similar results. Please help. I have over 3TB of files on this and I can’t replace it. 

Hello there, welcome to the community.

I’m sorry to read that you are unable to access the hard drive. We have forwarded this along to support, please check your private messages.