It seems something redirection problem. Are you sure about ARR is working correct ?
What do you see in web server log ?
I tried to setup FM13 without internet connection, but
FM13 needs ARR
ARR needs WebPI to install
WebPI needs some security change on IE and of cource needs internet connection.
So installation without i/c seems not reasonable for me.
Can't you temporally enable internet connection while installation ?
If you are not using IIS for anthing else, try this:
- completely uninstall FMS13
- delete any stray FMS folders manually
- remove the IIS role from the server
- add the IIS role again
- install FMS