I recently Bought a New PSU. the corsair RM 750X with 80 gold certificate and that stuff and i noticed a small electrical almost buzzing noise from the psu right where the cable goes in. ive pushed it in as far as it goes but it still gives me the noise. the fan is not spinning since my hardware is not so demanding for it to start cool and yet it buzzes at me... what could be the fault??? Thanks for answering