I bought two identical computers from Quality Recertified. One works flawlessly, the other started having symptoms a year after purchase and literally worsened over the course of trying to resolve the malfunctions with the seller, Quality Recertified. They only offered one solution, (reinstalling software) which did not work more than a few days, then gave me the brush-off by quoting me their 90 day return policy. So I asked if their computers only work for 90 days if that is all they are willing to stand behind. I did not want a new computer, I just wanted help solving the problems I was having with it. Not too much to ask I thought.  It says it won't boot due to lack of boot software. They could not help me fix that? Don't buy from this seller.