Win7 's flagship computer in the CMD command error how to do?

1. First, we also press the Win7 flagship computer keyboard Win+r shortcut to open the computer's running window, after which we enter path%windir%system32 in the Run window and click Return, in general, relatively simple failure can be resolved, Our Win7 flagship computer in the CMD command and can be used normally.

2. If the above method solves the problem, we need to return to the Win7 flagship computer desktop location, and then we right-click on the "Computer" icon, in the Slide menu, select Properties, then select Advanced System Properties, and then click on "Environment variables" to see what the value of "windir" is, Small knitting here suggest that you directly modify the default value of the system, if there is no "windir" This item, we create a new variable with the same name.