What to do when the Win7 system uses the ping command to prompt "Ping is not an internal external command"

1, on the "Computer" icon on the right to select "Properties" in the Open Computer Properties Settings window, select "Advanced System Settings";

2, in the pop-up "System Properties" window, switch to the "Advanced" tab page, click "Environment variables", into another window;

3, in the Win7 "Environment variables" window, find "System variables", in the variable item to find path settings, click the "Edit" button below. Will "; C:windowssystem32 "copy into the variable value, and then click OK;"

4, through the above settings, run into the doc interface. In the Start menu, open Run, type cmd in the Run input box, and press ENTER to enter the Doc interface. Under Doc command, when you enter the ping command, the following dialog box is displayed to indicate that the setting was successful.