I am currently looking at building a new computer for my dad. I was hoping to be able to reuse the hard drive he currently has as he uses his computer for work. I understand that I will need to do a fresh install of windows on the new system and activate it. However, I'm not too sure about what I can back up and restore to the new system once ready. Ideally, I would transfer all files and data as that is essential. Also, I would like to transfer the programs that are relevant to his work as they aren't stock programs you can download in a couple of minutes. Hopefully somebody can help, I'm trying to do research but nothing seems to be as specific as I would like. Thanks. Edit: It's not essential that I reuse his old hard drive, just preferred as I am planning on using it alongside a new larger drive. He also has two hard drives currently, I don't know if that will affect anything