You will get noise if Mic boost is maxed out. If so, turn it down at least one notch. You will also get noise if your computer is not properly grounded. So make sure it's wired properly. Noise can also come from other equipment in your computer or connected to your computer. So you can also try disconnecting any external equipment as a start. Then if everything else fails you need to start disconnecting internal stuff. And last but not least, could be a defect on your motherboard that's causing this.
ROG Crosshair VIII Dark Hero
AMD Ryzen 7 5800X3D
32GB G.Skill Trident Z Royal
2TB WB Black SN850X
Soundblaster ZxR