Thank you for your reply. It is appreciated. Allow me to reply in bullet form to save a little time.
Another USB Cable - hard to do since the WD drive has a custom male end.
Is data copied? Yes.
Is drive under warranty? Don't know. Purchased 20 Aug '15. Is it?
Strange noises? No. It's silent.
Boot from a Linux Live CD. This is very disappointing. I've already done everything you would have advised without achieving success. And now, instead of giving me a way to get a result, you simply ask me to do more diagnostics. I have no idea how to boot from a Linux Live CD on a windows machine, nor what a Linus Live CD is, nor where to get one.
The diagnostic tool is unable to access the drive. Further, when it attempts to access the disk I hear a faint clicking. This suggests the disk is out of alignment and therefore useless.
Thank you. Fortunately, the 1TB My Passport is still chugging along. I'll find something similar to that to replace the My Book.