CPU temperature Spiking

[Progue]

Hello, I have been having issues regarding my CPU temperature spiking. It is something that (obviously) should not be happening, as I have water cooling, sufficient fans and thermal paste.

I had really bad temp issues about 5 months ago, and I figured out my fan layout was incorrect and needed new thermal paste. I did this and the issue was now been fixed. However the problem has crept up again however its slightly different.

When I turn on my PC for the first time, the issues show. Temperatures reach ~100^oC (at its worst, so playing games) and back down again to ~70^oC. The spiking pattern is concerning me as I'm pretty sure it was a more steady figure 5 months ago. I don't think its a sensor issue as my computer does suffer a lot while happening, it runs painfully slow. Maybe my CPU was damaged from the previous incidents, heck could be some weird bitcoin mining virus that works in short bursts to stay hidden. (I think I have shown plenty here that my computer knowledge is very limited). A handful of the times the PC has turned itself off due to this issue, particularly if I am watch YT.

As a temporary fix, I currently turn off my PC, leave it for 10 mins and come back. After that, the temperature is still high-ish like 70^oC-80^oC range, but manageable enough to play with my friends

 

I use a AMD Ryzen 5 3600 CPU

 

Obviously I would prefer not to replace it, as I am not made of money but if I am to, I would love to get some suggestions in £100 range

 

Many thanks for reading

 

Henry aka Progue

[PDifolco]

Not normal for sure, your cooling is defective, under any decent AIO 240+ a 3600 should boot at 60C, idle at 40C and game at max 70C...

 

[OddOod]

Welcome to the forums!
I'd suspect a bad paste job. Pull the cooler, take a pic of the paste that's there, clean the old paste, apply new paste, tighten appropriately.