MacBook Air Registration in supportprofile.apple.com failed
I have a MacBook Air and I am trying to register it using my Apple ID on the site supportprofile.apple.com but I get the message that the device is associated with another Apple ID. I use my 'normal' Apple ID for iTunes, iCloud on the device but it is not attached to that ID so I must have registered it using another one but I don't know which one. Is there any way to determine which Apple ID my MacBook Air is associated with?
Thanks in advance for the help.
Brian
MacBook Air, iOS 6.1