Win7 bottom right corner network icon abnormal how to do

We use win7 system computer from time to time in the lower right corner of the network icon appears abnormal, the performance is wired or wireless connected but the icon is displayed as a red fork, surrounded by wireless hotspot sun icon, Internet connection is normal, icon Red exclamation mark!
Workaround:
Method 1: Open Device Device Manager: Right click on “My Computer>---“Manage”---“Device Manager”- --“View”---“Show Hidden Devices>---Click “Network Adapter>, all devices starting with "6TO4 Adapter" and “isatap.{…}” Delete (right click on device, select uninstall);
Close “Device Manager”. Click on & rdquo; start & rdquo; & agrave; & rdquo; control panel & rdquo; & agrave; & rdquo; Network and Internet & rdquo; & agrave; & rdquo; Open Network and Sharing Center
in & ldquo; Network and Sharing Center & rdquo; screen, click & ldquo; management Network Connections 
In the "Network Connections" window, right click on “Local Connections”. Select "Properties";
In the "Local Area Connection Properties" window, deselect <;Internet Protocol Version 6 (TCP/IPv6)", and then click “OK" button;
Restart The computer network icon will return to normal display.
Method 2: Cmd---The right-click administrator runs, enter the following commands in turn, and then restart.
netlocalgroupadministratorslocalservice/add
netlocalgroupadministratorsnetworkservice/add