I have a MSI B150 Pro-VD motherboard with Corsiar 450w semi-mod PSU... My i3 plus fan have been installed. SO when I plug in the PSU along with the 24 and 4 Pins. The PSU barely makes a sound when I turn it on for half a sec but then I take a screw driver to the front panel connectors that says "power sw" and nothing happenes.... PLEASE HELP 🙁(((