Adobe Display Scalling off the Chart

I have a 42" screen That lost its scaling so that now I have insect size menus Icons etc. but huge menu lists, dialogs etc. The whole thing was working perfectly until

something fell on my keyboard and reversed the desktop.

We had a similar problem with my sisters 40 inch monitor but this was fixed by an adobe support person.  They basically went in and changed some display settings in windows registry.  Now, Adobe simply stopped offering technical support.  I have tried turning off things in windows and changing things there but those solutions don't work for a large screen.  The trick is in the scaling in the registry.  I remember an article that detailed the steps for this fix but I can't locate it on the internet anymore.

Does anyone have that information? I am running windows 10 with FrameMaker 12.  When I first opened up FrameMaker 12 on the new huge monitor I was afraid of the scalling problem but it opened up perfectly, weird.