I have owned several Dell refurbs earlier and gotten at least two years of service out of each. This time, I had to return the first two I received and order a third. First machine would not start, second had no sound. Now ready to spend another 8 hours or so downloading apps and tweaking the third machine and hoping that one will last. Obvious to me that testing prior to shipping is not what it should be. I would not have ordered from this seller three times except that I could not find another seller offering a machine the specs I want.