My issue is that I have just built a new computer, and when i plug the SATA hard drive into the power supply, it prevents the computer from powering on. When It's not plugged in, the computer is fine, except with no hard drive. I have tested the Drive on another power supply and it also prevented that supply from starting. The only thing, both power supplies were basic 450w ones that come in the computer cases. If you can help me, it would be great!