This was my first time purchasing a refurbished computer and I did so due largely to Amazon's claim that as a certified refurbished product it was "tested and certified by the manufacturer or by a third-party refurbisher to look and work like new,with limited to no signs of wear." After setting up this laptop, I began attempting to configure settings such as which apps launch automatically on startup and that's when the first system crashed happened. I got a message saying a "critical error" had occurred and that a  restart would begin automatically; which of course it did not. Then I manually restarted and tried again to configure the system only to have the same thing happen again. This repeated for about 7 or 8 attempts before I gave up, re-packed the computer and submitted my return / refund request. I'm not sure how this clunker could have passed a certification test.