can you try the entire installation process with hdmi?
furthermore:what about the bios you are using?
what version? is it patched?
anyway, unzip the new patched file named Z77EI1.80.zip attached here (I patched, and it's 1.80: the latest version available for Z77E)and place the Z77E1.80 file extracted into a USB flash drive (MS DOS-FAT formatted), press F6 while booting into UEFI Bios, or find Instant Flash command at the bottom of Advanced\South Bridge Configuration and flash your Bios. After that, restart from scratch, double check bios config (see my guide in sig, maybe you find something useful) and post a new extracted virgin dsdt