Several? What are they?
What happens when you try?
Try this for each one:
It may be a NameSpace item.
If so remove it from the Registry using Regedit.
It should appear under the key: (along with the Recycle Bin, Inbox
etc.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\Desktop\NameSpace
It is good practice to export any key before deletion in case of
error.
Don't delete this one. It is the Recycle Bin.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\Desktop\NameSpace\{645FF040-5081-101B-9F08-00AA002F954E}
..
....Alan