https://lemmy.world/pictrs/image/dfe670a0-3d43-427d-b100-8d1dc5080437.jpeg #11. System panel. One left of it is for the wee speaker.
Also check that your chassis is wired up to this correctly, or, better yet, you can be a madlad and unplug it all and see what works. The caveat to that is.. you have to know what order to do that in. Generally, your power supply has wires that go to all sorts of stuff, make dang sure you don't power your cpu for very long without the fan/cooler. Once you know the cpu power and fan is working, keep plugging more stuff in til you find the problem.
I'd also mention if anyone hasn't, be mindful of static.