Soon I will be upgrading my pc, just the mobo, cpu and ram, I'm keeping everything else. I'm told that sometimes plugging in your existing hard drive with windows on it will just work, but sometimes you'll need to do a clean install, which I think is probably the better thing to do. Problem is I don't have the windows 10 disc, the pc came with windows 7 and there is a sticker on the side with the windows 7 product code (but again I don't have the disc). I upgraded to windows 10 when it was free. Some questions: 1). How do I go about doing a clean install of windows 10 without the disc? 2). Is it possible to create a disc or a usb from my current installation? 3). What about the windows 10 code, how do I find what it is for my copy? Any help much appreciated!