I still made the effort to install a temporary version of Windows 7, just for the update.
Despite neat installations, relocations, and other technical detours (safe mode, etc.), I encountered an obscure essential software error ("Unable to launch Intel MyWifi"), which, however, never appears in Windows 8.
I ended up dropping (though it's not my style).
I got reimbursed the product, and bought for 7, HDMI cable 10 meters that worked right away. To say that I had spent 70 in the ScreenCast ... and he now costs more than 120!