Black wallpaper after closing lid

[Ruzzbug]

Hi
I have Windows 7 and aero theme. When I close the lid on my laptop the wallpaper doesn't work on the aero theme. It's just black. My settings for closing the lid is "Do nothing". But it's only with the aero themes, not with the normal themes.
Please help.

Henrik

 

[manhunter2826]

Is it just a problem with one specific wallpaper or any?

 

[Ruzzbug]

With any Aero theme and wallpaper. The wallpaper appears when I do the windowsbutton+tab switch between different windows but when i let go of the buttons it disappears again