Thirteen months after purchasing this Dell CPU (new) the Windows 10 program crashed and I wasn't able to even turn the computer on.  This was quite distressing as I have an online business.  I did purchase an additional 1 year warranty at the time of purchse so was instructed by Amazon to contact the warranty company.  Initially I asked if I could have it repaired locally to save valuable time which they approved as long as the repair didn't cost more than the unit.  I did get the windows re-installed and got it up and running in a matter of a few days.  But the invoiice I submitted was not accepted the first time as it was supposedly missing one piece of info.  I had the repair company provide me with a second revised copy.  But THEN the warranty company informed me that the invoice had to have the serial number of the unit (which they failed to mention the first and second times).  When I tried to get the repair company to take the time to redo the invoice for a third time, they did not repond to my request as they had gone out of their way enough times to accomodate me.  So no reimbursement by the warranty company.