My Book Essential 1130, it was working fine, now I can see the drive indication in systray and from system manager-drive properties i can see the drivers, but it is not appearing in My computer, tested in multiple computers. Please support
Sorry that you are facing some issues with your WD drive. 🙁
The drive is recognized by Device Manager right? Do you have some data stored on it?
Yet, you need to go to Disk Management and see if the drive appears over there and how as well.
Unfortunately, taking into account all the things you've tried, it looks like there's something wrong with the device. (enclosure or the HDD itself)
In both cases, if the data stored on the drive is really important, you will need to look for some professional help. You can check WD's Data Recovery Partners out: http://products.wdc.com/support/kb.ashx?id=i4yOmV
Alternatively, if the drive is under warranty and you don't really need the data stored on it, you can contact the place you got it from or WD's Support and RMA it: http://products.wdc.com/support/kb.ashx?id=lYKRqM