Thank you for reply. I have exactly the same set up (HP laptop docked with two monitors). Thinking back on what happened, during the prep of my power point somehow I added a cameo link in 20 slides. I noticed this 'smiley' icon on the bottom right of those slides. I then deleted this icon manually. However, when in my recording I hit those slides, even if my camera was off (as you suggested from the presented view), even if I cleared the recording in the presenter view and in the power point itself.....every recording on those slides was a video of myself (with no sound). I solved the problem by going to my office (power point in my office computer doesn't have cameo), and only in that case, when I cleared the recordings on those slides, I was able to record sound and mouse movement.
I still don't know how to really clear a slide when a cameo has been inserted. ;
Thank you again