Case scratched up.Said there weren't any visible blemishes, but a blind man could see all of the scratches.Not sure about the OS/ Windows 10.No windows defender.Maybe it only needs to be updated and downloaded.No Lenovo app for updates, self-diafnostics, troubleshooting.Would have been happier if I spent the extra money and purchased one NIB.Have had problems with the yahoo mail app in the systry starting 3 months after purchase.Contacted seller through Amazon and left a voice mail.Seller never responded.The computer still isn't running correctly.