Just bought an AsRock Extreme 6 mother board and a I7 3770K processeor with HD 4000 graphics and I am have the same issue.
Was installing Windows 8 everything was fine then after the installation reboot shows the windows boot logo then black screen no display detected. I am using a DVI cable to a older ViewSonic monitor. I am going to try my Samsung LED TV with HDMI when I get home and will post results.
Spent hours researching this and hours more trying to install an OS. Also tried Windows 7 that is when I realized it was a Intel Graphics Driver issue. Once installed and I updated Windows with the ones Intel drivers from Windows this is when the screen went black.
I just registered to voice my concern here as well. You need to fix this Intel. I mean this is your flagship processor.