How does Windows 7 system automatically close the edge of the window?

First step, click on the “Start” menu, enter regedit, and press ““Enter” to open the computer “Registry Manager”.

Second step, in the "Registry Manager" window, find "HKEY_CURRENT_USER" - "-“ Control Panel", click "Desktop", click on it, find it in the right window “WindowArrangementActive”, double-click the file with your mouse.

The third step, in the dialog box that pops up, modify the default value of the system “1” to “0”, then click “OK”.

Step 4, we shut down and restart the login system, Windows7 system computer can automatically close the edge of the window to maximize.