Aero Peek is part of the Aero desktop upgrade in Win7 and is a new feature. If a user has a lot of windows open, it's not easy to find the window or desktop you want quickly. And, Aero Peek, is used to solve this problem. Aero Peek offers 2 basic features. First, through Aero Peek, users can view the desktop through all the Windows. Second, users can quickly switch to any open window because the windows can be hidden or visible at any time. And with the advent of Win8 RTM, many netizens found that although Microsoft has left the "Show desktop" feature (the button is canceled, but the click is still responding), but the mouse hover activation Aero Peek design is no longer useful. So how do we get back to the familiar aero peek?
Aero Peek is made up of two switches in the WIN8, the first step is to confirm that aero Peek opens visually, by right-clicking the computer icon on the desktop, selecting Properties → advanced system settings, and selecting "performance" → "setting" → "visual effects" in the pop-up settings panel. Just verify that enable Peek Preview is turned on in the first panel.
Next, right-click in the taskbar space and check the "Show desktop" button on the end of the taskbar with Peek Preview desktop When you move the mouse to the WIN8, so that Aero Peek opens successfully in the field.