Resolve Ping,ipconfig not internal or external commands under Windows system

In general, the value of the system variable path is deleted by mistake. Workaround: Right-click My computer → select Properties → select advanced system settings → environment variables → in the list of system variables, find the "path" environment variable double-click and open. In the variable value This column detects if there is the following information (%SYSTEMROOT%\SYSTEM32;%SYSTEMROOT%;%SYSTEMROOT%\SYSTEM32\WBEM), make sure that there is no case, copy the copy, and then click "OK". →ping,ipconfig and other command lines can use the

(1) Ping,ipconfig and other command lines cannot be used

(2) in the system variable find path, double-click Open, add the ellipse enclosed content can be

(3) Ping,ipconfig and other instructions can be used normally

Resolve Ping,ipconfig not internal or external commands under Windows system