So I have a Imac and my superdrive didn't really take my OEM windows 64 bit full version disk. I mean after about 30 secs it will just auto eject it. So I made a thread on here, and someone sent me a link to download windows 8.1 pro version. I didn't realise it was the pro version until I finished the install. So I obv going to try and put in my product key and it doesn't get accepted. Is there a way I can burn the Disc? I can only burn it on another computer which has windows 7 if thats possible and I want to put it on a external HDD drive to install it from there.