I tried to get a screen shot, but it didn’t actually capture the menu. But it was just as described: the right-most portion of the menu (Help) was off the right side of the screen.
I checked the screen resolution and it was 1920x1080 BUT the scale was set to 175%. When I set it to 150%, we could again see most of the menu, and we ended up leaving the scale on his screen as 125%, where he can see the entire menu.