Computer came dead on arrival. There was damaged to the power supply cable that connects on the computer. It would not fit into the computer properly so the unit would not power up, At least that is all I can assume that was wrong with it. So, without a new power supply to test it, it was basically a brick. I contacted the seller to let them know the condition it arrived in. After reviewing some pics they requested, they said they would send a new power supply. I was not interested in that solution because there was no way of knowing that is all that was wrong with it and would take time. I requested a refund instead. It took about a week for the entire return and refund process to complete but, was basically hassle free and where quick to respond. I'm not sure that the power supplies are tested before shipping or are just pulled out of a box of supplies and shipped. The technician probably uses the same known good  supply on the testing bench when refurbing instead of changing it every time, whos knows, just guessing.  I was disappointed that is was DOA, it seemed like it would have been a nice little unit. I bought a similar unit while in the refund stage ( hp prodesk mini 600 G1, same spec) and it works fine. Actually typed this review with it. Better luck with yours if you decide to buy!