Strange temperature behavior

[Christopher_829]

How come my computer sometimes runs at a very high temperature (about 99c) after I turn it on but when I restart my computer it goes down to a good temperature (about 30c although if I run cinebench it goes up to 60c)

 

I have a B460 Motherboard a I5 10400f EVGA SUPERNOVA 1000W PSU a Red Devil 580 a EVGA CLC 120mm AIO 32GBs Ram

Edit: Yes the AIO is clean and not filled with dust

Edited November 15, 2023 by Christopher_829

[unclewebb]

@Christopher_829

 

AIO is either clogged internally or some of the liquid has evaporated. It needs to be fixed or replaced.

[OddOod]

I'd always advise against a 120mm AIO. In fact most I advise against most AIOs. Air cooling is as good for less money and doesn't run the risk of silently failing.

[Christopher_829]

1 hour ago, unclewebb said:

@Christopher_829

 

AIO is either clogged internally or some of the liquid has evaporated. It needs to be fixed or replaced.

So how come it starts working again after restart if it is clogged or does not have enough water?

[unclewebb]

1 hour ago, Christopher_829 said:

how come

It could also be the pump that is failing. Maybe sometimes the pump does not start up and a restart shakes it out of its slumber. Try to feel the pump for any vibration when your CPU is at 99°C. Feel the hoses to see if liquid is circulating. One hose should be hotter than the other if the pump and radiator are doing their job.

 

All I know is that a 10400F should not be running at 99°C when an AIO is working properly. Either pull it apart and try to fix it or replace it. Air coolers tend to last forever. Many AIO coolers are not nearly as reliable as air coolers.