If you find yourself less technical and can’t follow all these tricks, not a problem! Then you need a simple application that you can simply install in your system and run DOS window in full screen with the help of an external application. After finishing your work on DOS you can “Enable” your drivers by following same path.You’ll find that your screen resolution is changed, now you can see your DOS window full screen.Right Click on that name and select “Disable”.
And it’s true the Windows Vista Display Driver Model (WDDM) precludes support of the necessary video mode. Doing that in Vista just gets you a message “This system does not support full-screen mode”.
In XP you can toggle this mode by pressing Alt+Enter. I’m guessing that what you really want is to have the command prompt literally fill the screen without changing its 80×25 layout. If that’s not the kind of full-screen you wanted, you can put Command Prompt back to normal thus: It accomplishes this by as many rows and columns of characters as necessary to fill the screen.
I observed some of the solutions for this as listed below: I critically faced this problem recently when I was supposed to perform some C/C++/Java Console Application Programs on my system. I came across many of people or students complaining about inability to run DOS in “Full Screen” mode with Windows Vista and Windows 7 operating system.