I have come across several computers on EBay with no operating systems. They are much cheaper as a result. Fenderman has stated you can usually install an OS, for free, based in the computer previously having an operating system. My question is if you buy one of these machines and it came from a business or government agency would this still work? Does the government or businesses lease an operating system for a set period of time then expire or might it just stay with the computer until death? Ebay sells OS’s for very cheap to regular pricing. Several comments from buyers stated after a period they got a message saying the OS license has expired and a renewal was required.