CPU throttling, overheating detected, black screens and fans full speed

[ElQko]

Hello, im new here, desperate btw.

(Ill attach specs with dxdiag because im lazy, location of pc and benchmark results)

The pc started to fatally freeze while gaming, displaying black screen with the hdmi symbol and fans rolling at full speed until i reboot or shut down the pc.

So i went to DL2 crash log, previously happened with Halo infinite. and showed DXGI error device removed, i found a fix for regedit creating DWORD value 0 named TdrLevel, so far so good for several days until yesterday crashed again.

After some more research it narrowed down to the PSU being faulty maybe, i dont know how to test it but i saw another video of the guy with the same issue touching connectors and having that freeze, the solderings were broken or something like that.

So i download aida64 to see a bit more detail on the pc and run the benchmark also forcing the gpu and warned me that the TdrDelay value was too low and the program will fix it, so it was also related to my gpu freeze, i reboot and run the benchmark, instantly 5 seconds into it, all cores to 97° 100° constant and cpu throttling up to 40% or so, ran the benchmark for 3 minutes and i stopped because of fear, minute after ran again for half a minute and same results.

I cleaned the case with air compressor few weeks ago so i dont think its dirt the main suspect of overheating.

I have this pc for around 6 years already, built it myself, used mainly for gaming and some years of rendering in AE, is the time of my pc coming to an end? I should upgrade the cooling? Any clues whats happening to the Graphics card? Maybe i should dismantle it and repair the connectors if they are broken but i dont have great pulse for soldering.

Important note is that i bought a new ssd OS dedicated but the windows doesnt work properly(for example i cant write on the searchbox along with other bugs) with this windows i started having these fatal crashes, im thinking about reinstalling another version, but i remember some time ago if i hit or move the pc it would reboot or shut down but never looked into it as i only hit it couple times unintentionally, so basically i have 2 problems, something might be happening with the input power to the gpu and also overheating to the cpu(might be thermal paste? Still has the original 6 years old, but i read they can last for a decade). Any ideas? Thank you very much guys for your attention by the way.

Another note as i ran another test before publishing, the cpu throttling only appears when i press Stress FPU and/or Stress Cache along with max temperature, which i have no clue what FPU is, with only Stress CPU it goes 80°-90° with no throttling.