|In your circumstances, a particular screen-shot/capture program might serve the purpose much better (if allowed). There are a number of good free ones out there. |
Unless you have special "circumstances" (see my last paragraph), I am thinking of a program where you take the screen-shot by pressing PrintScreen normally, but the program then immediately converts this screen-shot into a graphic file in a location of your choice. Some have options where the result is a shot of the current window, or the client window, or the full screen, and other options such as the graphic format used, the automatic naming/dating of the file, etc. Any such program has to be allowed to load up automatically for the user, and always be at the user's disposal.
However, you need to better describe to us what "environment" you are in when not logged in. I suspect it is a non-Windows, proprietary software in a perhaps DOS-like environment. Even then, there may be an answer, but we need to get much more info from you, much more.