Question Ryzen 5 2600 Overheating and shutting down PC

[Croperinho]

So i have been using a Ryzen 5 2600 like 2 years ago and I just realized that my CPU temp peaks up to 85°C and in some cases it shutdowns my PC. I changed my case to another one with 4 fans, changed the thermal paste and cleaned the stock cooler, but it still happens. Can someone help me?

My specs:

Case: Kolink Observatory Lite Mesh
Motherboard: B450 TOMAHAKW MSI
CPU: AMD Ryzen 5 2600
RAM: 2x8GB Geil Orion DDR4 3200 MHz (Dual Channel)
GPU: XFX RX 5500 XT
Power Supply: Kanji 850W
Cooling: 4 case fans, 1 stock cooler and 1 power supply fan

 

[Nemesia]

It's probably that Kanji 850W PSU.

 

[Croperinho]

It's probably that Kanji 850W PSU.

I have been using that Power supply like 4 years ago and never changed it. Do u think i have to change it or just change something from the BIOS?