I have a laptop happily running windows 7 home premium. I have the product key. Good start! I have two older laptops which are running ubuntu. I want to switch them back to windows 7. Both of these originally came with windows 7, but it was wiped in the ubuntu conversion, and the product key stickers on the bottom are so old I can't read them at all. Now since windows 7 was pre-installed when I bought these two computers, I don't think it's reasonable that I should have to purchase it again. However, I have no way of accessing those original product keys. Is it possible, and could you walk me through, making a copy of the windows 7 I have that's working, and then installing it on the other 2 laptops? TIA. ETA: while not perhaps ideal, it would be acceptable if the 2 old laptops didn't ever go online, they're basically for playing and wp in places that don't have internet access anyway. I don't know if this makes any difference, but if the "objection" to a missing product key comes when you go online, that wouldn't be an issue.