Software SolutionsWhy is the screen black when I use the desktop camera tool?

I have a new computer & just installed ActivInspire for work…the camera tool turns the screen black. I read through suggestions & tried to re-download then restart…the camera tool popped up and worked 1 time, now it’s back to black. I tried resetting resolution which did not work. What else can I do? I use the camera & video tool a lot to walk students through directions, it would be great to do some of this at home! Tia!