Hi
The only thing that I see is that the instructions that I found say that you need to use a USB drive to do the install even if you have a Windows install disk?
It seems to say that the Bootcamp process will make the bootable USB drive as part of the process.
Here's the instructions that I'm reading?
I haven' used a Mac in years so I don't have any experience using Bootcamp, but it's something you could look at.
The Boot Camp Assistant will copy the Windows installation files from an ISO file or physical disc to a USB drive. Windows will install itself on your Mac from this USB drive. The latest Windows drivers will also be downloaded from Apple and placed on this drive, and they’ll install automatically after you install...