Second Monitor - Objects / Text moves to random place on left using selection tool

I use a laptop and things are fine. However, when I move my window onto my second (much larger, so I can see) monitor, I can't move objects the same.  When I click using the selection tool and attempt to move the object and/or text, the selected object randomly jumps to a location left and down from where my cursor is.  If I move the window back to my laptop, it works fine again.  Help! This is hard to explain and I'm not super technologically inclined.   All I know is I've been using this same laptop and second monitor for over a year and now, all of a sudden, it's decided not to work the same.