corsair rm750

Hi all, i have a itx build and im installing my first GPU into it. Case : NZXT ITX MANTA MINI black Motherboard : Gigabyte GA-Z87N-WiFi GPU : MSI GEFORCE RTX 3050. PSU : CORSAIR RM750 When i install the GPU and attempt to boot up i get no response not even a light on the water cooler i...

Hey guys, I need help finding custom cables for a new PSU I might get for my build. I'm looking to replace my Corsair Vengeance 650W 80+ Silver PSU for the RM750W. I need help finding some custom cables that will go perfectly with it. I don't know much about compatibility and I don't want to...