i had this problem, and fortunately i have the solution.
your problem isn't your computer, it's the fact that FPSC-GAME.exe has started minimized.
solution 1. (lose the .exe)
press ctrl-alt-delete, use the arrow keys to go to processes, then fpsc-game.exe, press delete, and enter.
this will stop the process.
solution 2. (bring up fpsc-game)
press alt-tab and hold it down alt, keep pressing tab until fpsc-game is highlited, then let go of alt. this will bring up fpsc-game.
that shuold do it, let me know if it works!
i am proud to say that i am an official apple-juice mod user, always will be.