Win7 system appears "can not resolve the server's DNS address" treatment

1. First, we simultaneously press the win+R shortcut on the win7 computer keyboard to open the computer's running window, in the open running window, we enter cmd and Click Enter, so that we can open the command prompt window of the win7 system.
2. In the open command prompt window, we enter the command code ipconfig /flushdns and click Enter, so our command prompt window will automatically execute the command, we only need to wait for the command to complete Just fine.

3. After waiting for the order is finished, we enter the netsh winsock reset command prompt window again and click the Enter, wait for win7 computer after executing the command, we can restart my computer.