Win7 computer's cmd command can not be used how to do?

CMD is the Windows system used to execute a command of the operation, in the CMD mode we can view a lot of the situation in the computer, but, recently friends hint, Win7 computer in the use of cmd command always jump out of the internal or external command, so that CMD can not operate normally, Here we will introduce a solution to it!

First, we turn on the properties of the computer system, then select Advanced System Settings in the options on the left, and then we switch to the advanced paging and click on the environment variables below.

In the editor of the environment variable that jumps out, we set it as shown in the following figure!