Update 3-1-23: Another computer just died. Hard drive failed. Amazon will direct you to the manufacturer for the “1 year warranty” but the manufacturer will tell you it expired in 2019. Amazon will not do anything to help you, the consumer. Avoid purchasing from this seller because he NEVER responds and sells junk.  Again, Amazon won’t do anything about. Now I have two computers on my desk.I purchased 4 of these computers for our office. One of them did not work upon arriving. I immediately had amazon replace it. Out of the four, one has stopped working (only used 5 months). It keeps rebooting, asking for drivers to be reinstalled because they have "failed." My IT people told me they could not do much and to request a replacement since refurbished computers come with a one-year warranty.I am giving this a 2-star review simply because I contacted the seller last week and I still have not heard back (1-star for the inconvenience, 1-star for not hearing back, 1-star for causing me the extra expense of being down a computer). I will update the star rating once I hear back from the seller. I am hoping for their customer service to be great.UPDATE 1-17-23 I still have not heard back from the seller. The second computer (2/4) has stopped working. It was not even been a year since I purchased all four. The hard drive fell out of the blue. It was working find the day before yesterday.UPDATE 2-22-23 Amazon had informed me about a week ago they could not do anything for me and that I needed to contact HP customer service for support and replacement. When I called HP they stated my WARRANTY HAD EXPIRED BACK IN MAY 2019. Their 1 year warranty is not valid. I would avoid purchasing from this seller as he's never responded to my messages.