I have read dozens of posts on this topic but none has helped yet.
My system has Windows 8 with UEFI. I want to install Windows 7 Pro on another partition. I have turned off Secure Boot in the UEFI/BIOS. When I try to install Windows 7 Pro from a DVD it shows "windows is loading files" and then gets stuck on "Starting Windows" for ever. This happens even when no USB peripherals are attached.