Hi, I want to upgrade my motherboard, cpu & memory in my computer and wanted to know if there are problems I could run into. I had a retail version of XP running when I bought and installed the windows 7 home premium upgrade version at a local store. I'm guessing I will at least have to reactivate windows and I'm worryed that after installing the new hardware windows will think it is on a new system and will not allow me to. I have a custom built AMD computer with an ASUS motherboard and will be installing another AMD processor but I'm not sure about the board yet. Thanks.