I have an Intel Visual Fortran 11.1 program that generates user interface GUIs. The program works properly on some Windows 7 machines and on other Windows 7 machines it does not work properly. When executed, the initial program GUI doesn't pop up. Reviewing in Task Manager, I can see that the program is running, but there is no indication on the desktop that it is running. I tried running it in other compatibility modes, but that didn't solve the problem.
Why would the code run fine on some Windows 7 machines and not on others? Are the other Windows 7 machines missing a driver?