What should I do if the quick launch bar of the win7 computer disappears?

We know that in the win7 32-bit system, on the left side of the taskbar at the bottom of the screen, next to the win button, there will be a quick launch bar, which includes a lot of program software, we are free to use the software we often use. Tools are added to it, so that the next time we need to start, we can open it directly inside, avoiding the need to enter the library to open the query. This is a very user-friendly design in the windows system, which makes our operation more convenient and faster. Recently, some friends have found that their computer suddenly can't see the menu bar. How to solve this problem?
1. First, let's move the mouse to the taskbar at the bottom of the screen, right click, and select the tool. Bar - New toolbar, in the window that opens, enter the path %UserProfile%AppDataRoamingMicrosoftInternet ExplorerQuick Launch, then click on the Select folder below.

2. After the completion of the set, we should disappear Quick Launch bar will appear at the bottom of the taskbar, you go back and look at it.