I am trying to install Unity on an old computer with a 1.7 ghz cpu but the installation windows only show the top quarter of the window (so unable to see or select all the prompts in the window). I have tired going to system settings, but because I cannot see all of windows, I cannot change system settings to make the resolution smaller. Is there any way to change the resolution so that I can see the full window so that I can complete the installation?