A theme is a combination of desktop background pictures, window colors, and sounds. To get a theme, click Download, and then click Open. This saves the theme to your PC and puts it on your desktop. See Personalize your PC to learn more.
The Windows Aero Glass interface for Windows 7 or Vista requires a decent video card, you won’t be able to use it on an old clunker computer. For those worried about performance, sometimes squeezing every last drop requires disabling Aero. Disabling Aero in Windows 8If you’re trying to disable Aero in Windows 8, you’ll be interested to know that there’s no reason to, because they’ve disabled the Aero transparency theme by default anyway.So there’s no point in bothering for Windows 8 or 8.1. Disabling Aero for Windows 7First, you’ll want to right-click on the desktop and choose Personalize from the menu.Then you can simply scroll the themes down until you see the Basic themes.