Win7 system cannot open Aero Peek Preview desktop features

1, return to the Win7 system desktop location, to find the desktop computer icon and right click on the slide in the appearance of the menu select attribute options;

2, in the Open window, click on the left menu in the "Advanced system Settings", click the pop-up properties of the window after the Performance Options button;

3, in the Open Appearance performance list, where the "Enable Aero Peek" option and check it, (or directly choose the best appearance option), and finally click the application below-to determine the save settings;

4, return to the Open Taskbar and Start Menu Properties window can be found this "Use Aero Peek Preview desktop" can be used normally.