8700k Temp Issue

[feelinfroggy777]

I left my PC on during the night as I was mining with my GPU. This morning the system restart during the evening. I was not sure why it restarted as I turned off automatic updates in Windows.

I opened Intel XTU to see if there was a system crash and noticed my idle temps were in the 60C range, which seems a little high. I ran a quick Cinebench with the 8700k and my temps are going to 100C and the chip begins to thermal throttle. This was not the case a month ago as I overclocked the CPU to 4.8 and could run the bench with my temps in the low 80s.

I thought that maybe some got inadvertently changed in the bios so I reset the bios to factory defaults and booted back into the system to run another Cinebench. During the run I got the same results at stock settings.

Here are my system specs:

CPU: 8700k
Motherboard: Gigabyte z370 Gaming 7
CPU Cooler: Corsair h115i

RAM:  Crucial 2x8gb

PSU:  EVGA 1050G

GPU:  1080ti

When I look into corsair link it says my pump is running in performance mode and running around 3000 rpm. Both of my radiator fans are spinning fine. I used Thermal Grizzly Kryonaut thermal paste for the cooler.

The only thing I have done different on this build was with the thermal paste. I have not used the Kryonaut before and instead of using the "pea size" method, I used the applicator that was provided with the past to spread it out on the IHS. But I applied the thermal paste over a month ago and the temps were fine. Nothing has changed since and now my chip is throttling.

Does anyone have any ideas on what troubleshooting steps I should take next? Do you think that my h115i pump died despite that corsair link is saying the pump is working? I really don't want to go buy a new CPU cooler if this one is fine.

Any assistance you guys can provide will be very helpful. Thanks in advance.

[ManosMax13]

Dude i will help u,no jk idk sorry

[.Apex.]

it really does sound like the pump is not running anymore, its impossible that the screws got loose magically, unless someone disassembled it and reassembled it without your knowledge and didnt apply thermal paste.

[.Apex.]

or maybe the tubing is bent? blocking water from circulating, did you check for leaks?

[feelinfroggy777]

Yeah, it is not leaking and the tubing is not bent.  No way someone disassembled it either.  I did not have time to mess with it this morning before work, so I will checkout the screws when I get home.  I am also gonna try and reapply the thermal paste and see what happens.