I have this laptop that was running Windows 8. I swapped the hard drive and started installing Windows 7. I know the ISO was burned correctly. USB boot is out of the question, because both USB ports are 3.0. It's an ASUS laptop, American Megatrends BIOS. Secure/Fast boot has been disabled. When starting the installer, it says that it needs a cd/dvd drive driver. I Googled it, and all the results said bad installer. I tested on another computer, and it says the same thing, but when I used the same iso to install Win 7 on my primary rig, but with a USB drive. Anyone have any advice?