No Wi-Fi.  System keeps crashing - out of box.  Several StopCodes.  Junk computer and as of 9:00 PM, no return call.  Hours spent loading software and hundreds of GB of data from old computer, plus looking for a fix online.  Very displeased.  Doesn't appear to be refurbished, as advertised, certainly not by a Dell Certified Professional, as advertised.  More like someone else's boat anchor.  Will return to Amazon.