Downgrade to win7

Question

I have a Dell Inspiron 15-3521 with windows8.1 64 bit single language. Can I downgrade the same to windows 7 professional 64 bit?

ieee488 · Answer

http://www.microsoft.com/oem/en/licensing/sblicensing/pages/downgrade_rights.aspx#fbid=8UGdenUSTA_

I have a Dell Inspiron 15-3521 with windows8.1 64 bit single language. Can I downgrade the same to windows 7 professional 64 bit?