Ping is not an issue with internal or external commands

        You cd to system32 to try to see if there is a problem with the path, check it out, do not re-play it again and check the path in the system variable there is no such %systemroot%\\system32 I am like this, with set path Look at the combination of user variables and system variables Path=S:\\WINDOWS\\system32;S:\\WINDOWS;S:\\WINDOWS\\System32\\Wbem;S:\\Program Files\\Di skeeper Corporation\\Diskeeper\\;C: \\Program Files\\Microsoft Network Monitor 3\\;S:\\ PRG;S:\\Shortcuts;C:\\Commands;D:\\Program Files\\Sysinternals;C:\\j2sdk1.4.1\\bin;I:\\ Program Files\\Debugging Tools For Windows; assured change, is a few paths and has not changed badly, deleted one by one, see the bottom can not be used. Remember to restart the command prompt to take effect after the change.