Win7 system common taskbar lost method of recovery

Windows
7 The adjustment of the taskbar on the left side of the folder is quite different from that of Windows
XP. The following picture is for Windows
7 The status of the common taskbar on the left side of the folder is lost.

Operation steps

To restore the folder menu bar, click on the small arrow on the right in the upper left corner of the organization, as shown in the figure:

In the pop-up drop-down menu, select the "Layout" option, as shown in the figure:

In the pop-up submenu, click “Navigation pane” , as shown:

Now, the menu bar is normal. In addition, the sub-menu in the above picture "Layout" also has search pane, preview pane, detailed panel information and other options, you can try to adjust it, what effect will it have?