Like all Dell Optiplex products seem to do, the power supply went out.I do not blame JSM for this since it's a common failure with these computers.JSM sent me the computer in immaculate condition with all the accessories listed in the ad; all the accessories were new.I was going to replace the power supply but decided against this because it would almost certainly go out again.The 780 also has such limited space in the cabinet  ( everything is on top of everything else), I decided to keep it for my friends who own Dell machines and need parts.