Sorry you are having hassles trying to start the game…
Your system is definitely showing its age and will definitely need you to set all the game settings and resolution to the lowest options but it should be able to at least start the game.
What kind of error do you get when you say you cannot get past the loading screen?
what is your windows event log logging?
This is, at least for me, the best debugging tool you can have - at least as a user.
If it is showing an appcrash (error ID1000) for unity: uninstall citrix/teamviewer.
If it is showing a dx3…/nv… .dll error you should update your drivers.