I'm trying to install Windows 7 on my 27" i5 and I've been having a little trouble. I heard about people having issues with screens going blank, so I went ahead and followed Apple's instructions on the matter. I put the files they said on an SD card and started into the Windows installer. But after about two screens, it says, "Windows could not display the images available for installation." Then my computer restarts. Anybody have any idea what's going on?