Hi fogelmjf,
Thank you for posting your query in Microsoft Community.
As I understand that you are facing the issue change the theme.
Change the theme to improve performance
http://windows.microsoft.com/en-US/windows7/Change-the-theme-to-improve-performance
Bing Desktop is available for Windows 7
**http://support.microsoft.com/kb/2694771**
For reference:
Using themes
**http://windows.microsoft.com/en-US/windows7/Using-themes**
Please perform these recommended steps, review the additional information provided and post back if you are still experience the issue. I will be glad to provide you with additional options available that you can utilize to get this resolved.