GPU overheating issues.

And yes, the temperature was from the gpu. The cpu didnt get hotter than 55 degrees

I think that its a no name sad quality one, but i can say that it is from 2015, has 500 w and that i didnt have any problems with it before. I will be able to tell you the exact brand, if it has one in like an hour

So, i opened even viewer and there were errors, warnings and critical errors. The critical errors were called "kernel-power" and when i clicked it was described as "the system rebooted blah blah blah" so clearly that was the problems. There were also errors like ATI..... And thier describing was like ATI client service error

Searched about kernel power and "An underpowered or failing power supply may cause this behavior. For example, if you added RAM or additional devices or hard disks when this problem began, the power supply may cause the problem.". It's so clear at this point that the supply is causing the problems, right?

Well, on other site there was said that overheating can cause the problem as well. So, gpu or power source? If i run the gpu stress test and it stops at a certian temperature, then can we know if it was caused by the gpu or by the overused power supply?

Well, now im 100% sure that its from the psu because on some websites it says that 75 degrees when gaming is actually cool and and gpus can handle 100 celsius. At this point i think that the only thing i can do is a new power supply, right?