Like most of us, I received the pc with anticipation, plugged in my monitor, keyboard, etc., and then plugged in the unit.  Nothing happened.  I began to think I would be another 1 star rater, but then thought I've nothing to lose by calling tech support.  I had the most amazing experience!It was a call back set up - you put your number in, and they call you back.  The call back was immediate!.  The 1st thing I learned was that there actually was a power on button.  It doesn't stick out, and it's all black.  As soon as you push it, it lights up.  I would have felt like an idiot, but the tech support guy was so nice.  He walked me through the entire set up.  I have 2 other computers, so I bypassed the Microsoft enrollment.  This is my 4th very positive experience with an Amazon 'used' product.  Sure can't beat the price.  And my other 3 purchases are still working.  Plus, the 3 month warranty is something you can't get on a new computer.  Buy and enjoy,