Desktop and Windows Explorer will not refresh

I’m having a problem within WinXP Pro. The problem surrounds the Windows Desktop and also occurs within Windows Explorer. It may be happening within other windows areas, but I’m not certain yet.

Whenever I create a new folder or file on the Desktop or within Windows Explorer, I will not see it unless I manually press F5 key to refresh the screen. This also happens when I want to rename, move, or delete a file or folder. I will not see any changes unless I press the F5 key again.

What I want is to have the automatic refresh back whenever I add, rename, move, or delete something in the Desktop and Windows Explorer. Or, in other words, undo whatever has done this.

Thanks in advance.
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