While booting the installation program (via USB), the screen goes black, it looks just like the screen has been switched off.
The laptop is a Lenovo Ideapad z475 and, as per the "Beginners' Guide", I've tried to use
video=SVIDEO-1:d, still the same black screen however.
The graphics card is AMD(ATI) AMD Radeon HD 6470M & HD 6520G
The installation media is