Due to preoccupations, I was not able to play with the Microsoft Flight Simulator for some time, Now, it doesn't work. There is no copilot voice and the controls don't respond properly. When I pull back the joystick, instead of moving forward and accelerating, nothing happens other than the rear flaps moving. When I hit f7, which should move the forward flaps, nothing happens. I'm sure there must be other problems, but I can't get beyond this step. I don't know what happened, since the program was idle all this time. What happened, and what can I do? Thanks!!!