Good Morning, I brought my PC of a friend a year or so ago, and all was fine. I started getting BSOD around Xmas time and so have tried 101 things to rectify. In changing around the PC configuration it asked me to register my copy of XP, so I entered registration over the phone. Over the past few days I could not overcome the problem and so decided to format and re-install XP. Here comes the tricky part...the person I brought the PC from did not have the original XP disk. So, I thought thats fine, I have the original product key, I will use their copy of XP but enter my own legit key. I put the disk in and let it do its business, it never at any point asked me for my product key? So, I went to the system/general tab and noticed I have an OEM install. From what I understand this means the disk I used automatically installs using OEM product key. I obviously want a legit install and to use my product key so I can register in the correct manner. I hope this is clear, any advise would be greatly appreciated. Thank you..