Sorry, but you need to formulate your problem more clearly and give more details about your computer hardware and software (operating system).
Right now, the only meaningful response that anyone can give is: 'I think there's a problem'.
hmm
It's possible you do not have an AVS file loaded- called a preset- (although, a fresh install of AVS has a preset preloaded). Double clicking on the black screen should open a window, and use the menu in the window to load a preset. It uses the windows open file interface, so that's nothing new.
Good luck