@luisdent like i said, show us your config file and we can diagnose. there's an extra few lines that helps on some monitors:hdmi_max_pixel_freq:0=200000000 hdmi_max_pixel_freq:1=200000000
in addition to a working 1080p mode, which for you may behdmi_group=2 hdmi_mode=82
ps, can you not SSH in to diagnose via another PC on the network?
Not sure which fixed it, but this made it work properly. It flickers a screen with the terminal/command cursor a few times quickly but i see it and then it displays the appropriate screen following that. So far i've gone in and out of config screens and reboots and it appears to be working now.
Now to fix the performance issues ;-) or i should say optimize. it runs fairly well. :)