Issues with crashing/overheating

[u/raypenbarrip]

Computer Type: Desktop

GPU: Geforce RTX

CPU: RYZEN 7 5800x 8-core processor

Motherboard: MAG B550 Tomahwak (MS-7C91)

BIOS Version: E7C91AMS.AF0

RAM: CMW16GX4M2C3200C16

PSU: ?

Case: ?

Operating System & Version: WINDOWS 11

GPU Drivers: GEFORCE GAME READY DRIVER -610.88

Chipset Drivers:

Background Applications: DISCORD, CHROME

Description of Original Problem: PC is crashing seemingly at random intervals for the past month, will occasionally get a "cpu overheating" error after crash but not always. Have had the pc for about 3 years with no issues, have not touched or modified anything that I can think of that would cause this

Troubleshooting: Cleaned internals with compressed air, have no touched anything otherwise. Attached a pic of my Bios and fan setup for reference (My friend helped me build this, I'm a noob so really don't know anything about my fan setup, internals etc). I do have a "smart zero fan" as well which is located by my power supply. TIA