Visual basic 2013 issues on launching it with computer

Hi!
I am just new with computer programming. I recently installed also Visual Basic 2013. I was able to use it for at least 2-3 weeks. When I turned on my computer and launched this software it posted me message “The application cannot start.” Can you tell me what could be the cause of this problem? Can you give me instructions on how to resolve this error? Can you give me alternative ways on how to resolve it and to avoid this from happening again?
