Hello.Today I decided to upgrade my PSU from a crap Segotep ATX 500W to Corsair CX450m, 80+ bronze, 450w.I got the PSU and install it. But for some reason the PC îs not oppening at all.. I saw that the new and old one do power the leds from the motherboard but that's all. I have a ASUS PRIME B350M-K Moatherboard and I saw that when I am connecting the pins to PHD 6000 the CPU cooler fan goes for one second and that's it. I don't know that to do I already lost some money for the PSU I cant afford a new motherboard.