Bit of a long shot, but have tried uplugging any non essential hardware (usb) etc..
You could try a chroot install, and not bother with the livecd... then recompile a custom kernel and boot into that. You may come up with the same problem again though. Its kinda hard to see what is going wrong without proper debug/error messages.
You could also try disable ACPI in the bios and/or regenerating innitrd or passing noacpi to the bootloader.