When you generate Arria 10 HDMI design example using Windows platform, you will notice that software/tx_control and software/tx_control_bsp folder are missing. This is due to there is a problem in the design example generation script that causes software is not built. Due to the software is not built, transceiver TX is not able to be reconfigured correctly and you will encounter no display issue on the HDMI TX.
Run the build_sw.sh script by using command "sh build_sw.sh" to build the software manually before Quartus compilation. It will be fixed in Quartus 17.1.2 Pro and Quartus 18.0std.