What should I do if the search box started with win7 system disappears

Win7 I feel that the best use should be win7 search box, whether it is to find software, use the command to open something, are through this function, without it really is not used to it, and if it is not, we have to be like this It's back?
1
The search box is gone.

2
The reason for this problem:
A lot of times we follow certain software and often cause This search box is gone. Don't look for any software that will cause it. Basically just the software changes the configuration of your computer and you should come back.
3
Go to the Control Panel and double-click “Programs and Features”. In the window that opens, click "Open or close Windows function" in the upper left corner.
In the dialog that opens, find and tick "Windows Serach";

The above is about win7 system What to do if the search box at the beginning disappears, a dialog box will pop up at the end, and then OK, wait for 4.5 minutes. Then you can see the search box at the beginning.