Oh. The most likely issue that comes to mind is something with Ren'Py 8.0 not playing well with older versions of Windows (I feel the sentiment, I also usually drag out upgrading to the last possible moment).
I recompiled the latest version of the game with the old Ren'Py 7.4 engine, could you tell us if this works?
https://drive.google.com/file/d/1-2yEycWi9BQVBfzoNU4pqoMJL8kwEOfa/view?usp=shari...