How to automatically update Windows 7

The method for automatic update of windows 7 is as a result of the configuration of windows service on the virtual machine two days ago, it is found that there is always a windows Update light blue prompt in the bottom right corner of the desktop, and now you can open your computer at home, I found that a lot of things are old versions, so I just had to figure it out.
1) Click start to search for windows update"

2) Click "Windows Update" in the program to pop up the main window www.2cto.com

3) Click "change settings" in the left-side Navigation Pane. In the important Update column, select "Automatic Installation and update (recommended)" from the drop-down list )"

4) Click "OK" to make the change take effect.
Alternatively, you can create a Windows Update shortcut on the desktop from the ANLJF column.