Error; The Folder Desktop Cannot Be Used

I have a button click on my form, when I click it I receive the following error; The folder Desktop cannot be used Choose another folder

OK

When I click OK,

it opens My Documents, My computer then I can browse through the drives..

We have restriction in my work place and cant open the desktop, therefore, I wish to change the code to go straight to my computer where all the drives can be seen..

Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim fbd As New FolderBrowserDialog

[Code].....