Vista window appears at the top and cannot be deleted

I have no idea how he did it but on my dad's laptop, which is running Vista, there is a window at the top; you can only drag it down but not remove, minimize or maximize it as those options do not appear. I restarted but it's still there.

Here's a screenshot of what I mean:

开发者_Python百科

How do I remove it? It used to be my laptop but I've never seen that when I used it.

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It's a deskband. You can move it around with the little grippy thing on the left. You should be able to right click the Taskbar, select toolbars, and uncheck whichever one is that one.