The thumbnail on the Win7 system taskbar is missing, what's going on?

Win7 system has a unique function, called "taskbar thumbnail": That is, move the mouse to the taskbar icon will show preview thumbnail effect. But do not know what set up, the effect is gone, how to find it back? Let's see how to set up the fate of small series!

1. Press the shortcut key "Win+r" on the keyboard and enter "Gpedit.msc" to open Group Policy, as shown in Figure 1

Figure 1 Opening Group Policy

2. In the local Group Policy Editor, turn on User Configuration-Administrative Templates-Start menu and taskbar, and find the close taskbar thumbnail and open. As shown in Figure 2

Figure 2 Finding "close taskbar thumbnail"

3. In the "Close the taskbar thumbnail" interface, click "Disabled" and apply. As shown in Figure 3

Figure 3 is disabled

For each other, some users do not want to use the thumbnail feature, please see how to disable the thumbnail display of icons in the WINDOWS7 system