i have a laptop came preinstalled with windows 7 ultimate and there are major issues with it after using it over the yr anyways i cant find the software that came with it how can i do a clean installation or upgrade to windows 8 using my wifes product key
That will depend on if the product key is oem or retail and if the key is still in use or not.
If its oem its tied to that pc.
If its a retail key and not being used you can use it (unless MS has changed this with win8?).
You can't activate windows on 2 pc's with the 1 key.