I have a corsair cx600 power supply laying around, and I want to save it up for my next build, can you guys maybe link me some items to base around the power supply. Motherboard, cpu (preferably intel core i5)? I already have a computer, but the parts are pretty old, will I need to get a new hard drive as well? Is it possible for me to just put the Hard Drive into the newly built computer and not have to get windows 7?