The computer arrived in less than 3 days, at 1st power-up I experienced a boot config. problem, I called the seller (Computer World Ent.) and their tech. resolved the issue in less than 5 mins. - not a major issue at all. Oh, I had to reset the date and time as well, expected event really. The computer is terrific, runs quietly and smoothly and it is completely dirt free. This computer was upgraded from Win 7 to Win 10 and is a refurbished unit. The mouse and keyboard were included. As a plus the clock speed is advertised as 3.1mhz but it is really 3.3mhz. All of the other spec. data is as advertised. This is a very nice, powerful computer for the selling price. I am very satisfied.