If it is an OEM disk, it may not work in disks from other manufacturers.
That being said, the easiest thing you can do is to reburn a Windows disk with the
Without this file, Windows will ask for a serial key during setup and only install the version that belongs to that key (If you do cancel/choose not to type a key, it will allow you to select any edition - do not do this).
X64/X86 keys are interchangeable, so no need to try double.
An easier solution to burning is to copy the sources folder to a USB stick (and delete the
ei.cfg file), then boot from a disk like normal. After confirming the language/first page, ignore everything and hit Shift+F10 to launch a command prompt window. From here, keep typing a drive letter in alphabetical order until you reach your USB drive then go to the sources folder and type "setup", this will launch setup from the USB stick instead of the disk.