Windows 8 is already jnstalled in UEFI mode on an Asus g55vw laptop. Sad but true, I need it - for now.
Downloaded the last version of Ubuntu 12.10.
Made a bootable CD from the iso-file.
Reboot in EFI-mode.
BIOS -> check, ubuntu boot screen -> check
Both indicating the system is running both CD and HDD in EFI mode.
Pressing both "install" and "try" options result in 20seconds of CD and HDD operating-sounds and LEDs blinking. Then silence and a blank screen.
I would really be greatfull for some suggestions :)