I can't get my MacBook Air 13in that I bought used, to register with Apple. How can I do it?

Question

A guy was selling this Mac used so I got it. The only thing was after he had cleaned the hardrive he had put it in his name again, and sold it like that. I later figured this out and reset the hardrive and, what I thought, put it back to factory setting. The only problem is that i tried to get iLife from the app store and it said that these apps are associated with a different Apple ID and then it was trying to charge me $15 dollars for each. So i went to the Apple website to register this one with Apple. When I typed in the seriel number though, it said this product is associated with a different Apple ID. iTunes also, when I looked at my puchased movies through the cloud it asked if I wanted to tranfer these purchases and if so it would lock my account for 90 days. Can someone please help me fingure out what I have to do to fix this? I have been using this computer for some time now so it would be nice if I didn't have to set it back to factory setting, but if I must I don't mind doing it.

Answer 1

The person that sold you the MBA has to delete the serial number from his profile on the Apple web site before you will be able to register it.  He also needs to delete it as one of the 5 computers on his iTunes account.  Since you reloaded it the only way he can do that is to do a total delete of all computers on his account.
All progerams and apps that he purchased are not available to you.
You have to purchase your own copies.
The support profile can be found here:
https://supportprofile.apple.com/MySupportProfile.do