i bought a refurbished (mother board- the brains, heart and soul of my machine---the main computer component) from the company that makes my machine, it was guaranteed for a year...had it for almost 3 now...very happy with it, since the New one that came in the machine did not last that long. i have no problem buying refurbished if it is a reputable source and they guarantee their product...mine refurbished mother board saved me almost $500.