I had an old pc with windows on the HDD and i didnt have the money after buying all new parts to build my first pc. I decided to add my old 1TB hard drive in with my new 2TB hard drive sense it has windows on it. When i turn on the pc it loads bios fine but i cant seem to figure out how to load into windows. What am i supposed to do now after building it? Ask any questions you need about what parts or whatever.