RECOMMENDED: Click here to fix Windows errors and optimize system performance
See the scenario in which you want to change your display customization settings in Windows 7, several times between Windows 7 Basic and Windows 7 Aero themes.
After several iterations between these two topics, your display cannot change and the Please wait dialog box no longer appears while a change is being edited.
Your customization of the display remains in the basic theme.
This is another known problem with Windows 7 about Microsoft is aware of.
Until then, you can try selecting Windows Classic or one of the high-contrast themes, then wait for the dialog box and processing to finish, then select the Aero theme of your choice.
RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance