Call the place where you purchased the xbox and ask them do they do repairs on xbox gaming systems? If so then that is where you should take it.
Not exactly sure whether the geek squad repairs Xboxes or not but I caution you if you try to use the geek squad I've had several friends who have used them recently and not been happy with the service that they've received
Probably better to do what Wendy said or take it to a Microsoft store
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