Applies to Windows 7

Open the Aero troubleshooter

If your computer is having problems running the Aero desktop experience, which includes effects such as transparency, try using the Aero troubleshooter to fix the problem. It checks for common compatibility issues with running Aero, such as your computer's color, theme, power settings and your computer's video card.

Notes

To make sure you have the most up-to-date troubleshooters from the Windows Online Troubleshooting Service, your computer should be connected to the Internet. For more information, see Troubleshooting in Windows.
To learn more about Aero desktop effects, see What is the Aero desktop experience?

‌Open the Aero troubleshooter by clicking the Start button , and then clicking Control Panel. In the search box, type Troubleshooter, click Troubleshooting, and then, under Appearance and Personalization, click Display Aero desktop effects. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.