Received unit on a thursday and had problems from the beginning emailed them and they wanted scree shots and since I had spent hours trying to install things finding out that certificates where not installed I then asked to return. they have the nerve that I have to pay to return.  I then reinstalled windows 10  finally got all working but now I find out the cd rom does not work.  Never again from this company will I buy. I have bought many refurbished units but not from this company with no issues.Money thrown away. Too Add to the fire once all installed found out now the cdrom does not work it makes noises and does not read. I have an external one if I need one