System eventually did work but it took a little tech work to get it up and runningAt first turn on the power light blinked amber which usually means power or component failure. Used the Powersupply diagnostic button showed everything is fine with the powersupply.Luckily being a computer engineer I was able to diagnose the issue quickly. It came with three faulty DIMM slots so only 1 stick of RAM was useable. I was able to put an 8GB stick in the working slot and got the computer working properly.The computer works great. It was snappy, and worked as intended for what was needed. Office work,emailing and web browsing.Don’t know how the system got through the refurb certifications since 3 out of 4 DIMM slots were DOA but in the end the system works like a champ although not to it’s full potential.