cpu or power supply problems

Hello folks, I was enjoying the Fortnite live event that occurred on the 15th this month and it has some pretty insane visuals. After a few minutes my PC started making a weird grinding noise and the fans had some sort of suppressed sound. My temps on idle are pretty solid but I don't know if...

I'm new to building PCs from scratch but have upgraded existing components quite a bit so I'm confident in my ability to assemble. However, I'm not great with matching up components to ensure the PC isn't bottlenecked or wasting power by pairing with weaker parts. This is my build so far...