I have windows 7 on my laptop that I ordered. I decided to install the same disk on my PC not knowing that I could not do this. It worked perfect for a couple of months and then said I needed to purchase a valid key. I had windows XP installed on it previously. My PC says that I am running a counterfeit version of windows 7. I am a student and was looking at purchasing the windows 7 upgrade, but I am unsure that it will work on my PC. Would all I have to do is enter in the new upgrade product key, or would I have to do a clean install again? Or purchase a full version because I also do not have my previous XP product key because my ex stole my disk from me. But there should be a way that I can get it off the computer, yes, no?
Thanks
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