Hi there.
I did a restart and I was waiting for Windows 7 to load.
After some minutes, I have notice that the desktop, only shows the theme and the taskbar.
Actually check the first picture (I upload and you will see what exactly I see).
Now check the second picture I upload.
I open "my computer" and then go to "desktop". There I saw all the items that were before the problem.
However, I can't drag and drop them into the "new" desktop.
If I want to use them, I must open "my computer->desktop" and double click them from there.
Do you have something in mind?
(I did a system restoration but nothing happened).