My mistake was to leave it in the box for almost a year. I bought it as a back up in case one of my front desk computers failed. Installed it ten days ago an yesterday went black and all connections to both monitor and network stopped. The 90 days warranty was expired, of course! (the company refused to do anything about it) and the cost of repair according to my IT guy would be at least two times more than what I paid for it.I might have been my mistake but one thing for sure, if I ever buy a refurbished PC again which I doubt, it would not be from these people!