This is almost too simple, but if it can help 1 person, it’s worth it.
The same thing happened to me: my MyBook Essential drive locked itself up on its own accord.
When I first realized that my drive was no longer visible in Windows, I dismissed the problem as one of those intermittent quirks; thinking my next reboot would fix everything. Wrong. I then tried all possible combinations of disconnecting the drive from the computer, powering down the drive, etc. Nothing changed, the drive was still invible.
It’s only then that I installed WD Smartware and realized that the drive was locked. Locked!!! **bleep**! Like you, I did some research, tried a few more things (like powering down the drive for 1-2 minutes), but nothing worked. Sounds familiar?
After surprise and denial, came anger… and a few hours later eventually, acceptance.
At that point, I powered down the drive and disconnected all cable from it. I let the “brick” sit there overnight , dreaming of the ways I could end its days for having failed me in such a treaturous way. The next day, I thought what-the-**bleep** and reconnected the drive , giving it one last chance… Ta da! The drive reappeared in Windows , accessible and functioning as if nothing had ever happened. I think I scared it back to life
As I said, almost too trivial to be a valid solution, but if you haven’t tried it, give it a shot. It worked for me. That being said, the whole experience still has me looking for another backup solution/drive. I no longer trust the WD My Book drive to hold the only remaining copy of my data.
Hope this can help. If not, I feel your pain.
Martin
P.S. I find WD’s position unacceptable to say the least. The fact that they try to dismiss or downplay the problem, or worst blame it on the users, is what got me the most angry.