Windows 7 system is restricted by router Internet access Prompt network access is restricted

Q: I bought a new TL-WR740N router. After installing it according to the instructions, I can go online. However, after a while, I will be disconnected. A yellow exclamation mark appears in the lower right corner, indicating that network access is restricted. After a while, it will automatically connect. It is normal to take the notebook to other places. Is there a problem with the router? My system is Windows 7 Ultimate.
A: This is the Windows 7 system's "common problem", which can be solved through Group Policy settings. First open the Group Policy window, and then expand “Computer Configuration & Rarr; Administrative Templates & Rarr; System & Rarr; Internet Communication Management & Rarr; Internet Communication Settings & rdquo;, then in the right window, find "Close the Windows network connection status indicator Activity test & rdquo;, double-click to modify the property to “ Enabled & rdquo;