Bought as a gift for my daughter for college.  Item remained in the box until her school was to start.  When she opened the item, it would not turn on.  Charged for about an hour and still wouldn't turn on.  Charged for 3-4 hours and still wouldn't turn on.  Charged over night and still not turn on.  Took to Apple service store and discovered there is no serial number on the item, so Apple cannot help troubleshoot.  I have spent $750 or a product that has never been able to even turn on.  Unfortunately, there is no clear path to contact seller directly and try to replace through Amazon because the return window is outside of 90 days.  Three things that I wish I had known; there is no serial number on this laptop, which comes with all Apple products for support, no contact information for the seller to give them an opportunity to correct their defective product and Amazon will not authorize a return outside of the return window.  I am humiliated for giving this defective item to my daughter and frustrated with no way to at least get the item replaced or money refunded.  Update:  Seller responded with only one sentence (name was Max) to my message via Amazon stating they refuse to replace the product or try and fix it.  I feel I have been a subject of fraud and will report to Amazon and BBB.