I am a student and I have a Dreamspark account. I have an x64 laptop so I downloaded Windows 8 Professional 32/64 from their site (there was no other version only for x64). After I install the OS, I found that Windows installed on 32 bits. This is not what I want and during the installation I did't see any option for that (a checkbox or something).
My question is: How can I install Windows 8 x64 from a 32/64 ISO downloaded from Dreamspark?