I have been using the WD My Book Essential 3TB since December or January with no real problems. But a few months ago, I unplugged and replugged either the power cord or USB cord. Since then, I have been unable to access the icon to log in. I have updated the driver, and I have unplugged & re-plugged both the power cord AND the USB cord. I have a Windows 7 operating system. When I click start and go to My computer, the WD Smart Ware icon used to be visible. I would then be prompted to enter my password, and then I could access my data. Now the Smart Ware icon is no longer visible. What do I do now?
Try the steps provided on the following link:
WD external drive is not assigned a drive letter by Windows or Mac OSX and data on the drive is inaccessible