New PSU Problem

Duzz7

Honorable
Jul 5, 2013
67
0
10,630
Specs: MSI B75MA-P45, i5 3570k, EVGA GTX 650 TI, 4GB Corsair Vengeance Ram, EVGA 600B PSU, Rosewill Challenger Case. When I bought this new PSU it was going to replace my old 430 watt PSU that caused some stability problems with my system. I got everything plugged in with my new PSU tried to turn it on and nothing happened. Tried unplugging and replugging everything back in again and still no power. So I thought the PSU was DOA. Then I did a paperclip test and saw that the fan started working on the power supply. After this I plugged in the 24 pin connector to my motherboard and the fan would not come on. What is the problem here?