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

I am a teacher & downloaded w/code for home use

New desktop HP computer;  no projector

Adobe FLash dated 11-3-17

I have a shortcut on the desktop I use to open program

Yesterday, the camera worked for several pictures, however this morning, it’s back to black. I never closed out after putting my computer to sleep.

Just closed program & re-opened, still black.