Just received this product.  Certified refurbished should be working properly.  Plugged it in - cord is loose, so it shuts down any time I go to plug something in.  Front four USB ports are worthless.  NONE of them work.  Keyboard they provided broke before I had a chance to get Windows fully loaded and write this review.  Highly dissatisfied.  Called their customer service - got answering machine.  Pressed appropriate buttons, and left a voicemail.  Calling AMAZON next.  Spent way too much money on a paperweight.