What should I do if the win8 system DOS command prompt fails?

DOS command prompt is a function that we often need to use when maintaining the system. It can be said that it is very important to the system, especially when the system encounters some serious problems, in general, the DOS command prompt. We can all solve it. Today, Xiaobian is testing the network connection with the command prompt, but suddenly found that no matter what command is entered, it will prompt "not internal or external commands, nor executable programs or batch files", command prompt all commands It has failed! What is going on here? Xiaobian, this will share with you the solution.
What should I do if the win8 system DOS command prompt fails?

1. Open the traditional desktop, right click on the computer and select Properties.
What should I do if the win8 system DOS command prompt fails?

2. Select Advanced System Settings under the left control panel home page.
What should I do if the win8 system DOS command prompt fails?

3. Select an environment variable.
What should I do if the win8 system DOS command prompt fails?

4. Find the variable Path and choose Edit.
What should I do if the win8 system DOS command prompt fails?

5. Modify the variable value to “%SystemRoot%\\System32;%SystemRoot%\\System32\\WindowsPowerShell\\v1.0\\”, then save and exit, restart the computer and try it.
What should I do if the win8 system DOS command prompt fails?