Question Replacing EVGA 650 GT Power Cable

Mar 5, 2022
Relatively new to PC building. I've built a new PC today, all works fine, except the power cord does not fit snugly in the socket on the back of the PSU (referenced in the title). It wiggles a little, and when this happened while it was on, I lost power. There is also a buzzing noise when the cable moves.

I tested another cable of the same shape in the socket while it was off to see if there was an issue with the socket rather than the cable, and it fit fine.

Do I need to replace the cable? If so, how? I tried asking for a replacement cable from the amazon seller to no avail, and I can't seem to find anywhere online to buy a replacement for my specific power supply.