Elements will not make a selection to the top 25% of the subject using all tools

Hi, I am using PSE22 and have a new computer Dell XPS and using a 32" BenQ 3200u-T monitor, Resolution (max.) 3840x2160 and max output is 2K.  I had an older computer and smaller monitor and used the same program without any problems.  The only differece I can see is that in hooking it up I used a mini HDMI instead of a HDMI 2.  I did not know if any other people had an issue with this or had found a solution???  I have not tested it with the older HDMI and hate to start because I lose some of the functionality of the monitor which is made for photo editing.  I appreciate any feedback or solutions.

I do get an error message on occasion from Elements that says "No pixels are more than 50% selected.  The edges will not be visable."  I don't see how this relates, I am going very slowly it just will not continue the selection and colapses on me, no way to add on either, it just will not do anything to the top 25% of the picture.

Thank you for any answers of solutions

Rich

Rich