Turn+Off+Transparency+for+Faster+Performance

The transparency feature of the new Aero interface might make Windows 7 look a bit prettier, but it can degrade performance, especially if you have a low specification graphics card. Fortunately, you can turn transparency off while still keeping the other benefits of Aero, such as seeing thumbnails of hidden windows when you hover your mouse over a taskbar icon. To turn transparency off:
 * 1) Right-click on a blank area of the desktop and choose **Personalize**.
 * 2) Click **Windows Colour and Appearance**.
 * 3) Un-tick/check the option **Enable transparency**.
 * 4) Click **OK**.