Try not to clutter the forums with duplicates.
In closing, try the drive maker's support site or the place that sold it. I don't have one or own one.
I can guess you may have formatted it, but your post is light on detail. For instance you could have hit some hundreds of files in the ROOT or TOP directory and that would appear to be write protected and WINDOWS may indeed cough up that error instead of telling you it ran out of directory entries. Again, a wild guess in the absense of details.