Hm, I don't know why it don't works.

Let us try it the long way.

First of all type in:

Code:
dir
and hit the "Enter" key. Now you should see a list of files and folders. Do you see the folder Windows there? If yes, go on with the command lines.

Code:
cd Windows
hit the enter key
Code:
cd system32
hit the enter key
Code:
cd config
hit the enter key.