Windows 7/8 computer Desktop taskbar thumbnail Why is it missing?

As long as the relevant hardware and drivers are operating normally, this problem is well resolved, change the relevant settings on the line. The steps are as follows:

Method One

2. Right-click computer and select properties .
   
   
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4. Select Advanced system Settings on the left side of the page.
   
   
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6. Switch to the Advanced tab and click the Settings button in the Performance bar.
   
   
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8. Select Visual Effects to have Windows choose the best computer settings or adjust to best appearance , and then press OK to exit.
   
   
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Method Two

2. In the Start search box, type: gpedit.msc , enter, and open the local Group Policy Editor.
   
   
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4. Expand User Configuration - Administrative Templates - Start menu and taskbar in turn.
   
   
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6. In the right detail window, pull down the scroll bar and find the " close taskbar thumbnail " item.
   
   
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8. Double-click to open to change the setting to either " Not Configured " or " disabled ." Then press " OK " to exit.
   
   
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