Solved

CPU (i7 6700k) getting dangerously hot all of a sudden, please help!

I got my new gaming PC about 2 months ago, and everything was fine until this morning. I was looking at SSDs and needed to see if my mobo had the right socket or whatever for something and so I went into the BIOS to see if I did. The first thing I noticed was that my CPU was Idling at like 40-55 degrees! I knew something was wrong, but thought it was just my BIOS not reading the sensor correctly or something, as normally my CPU idles at 25-35 degrees. I felt the tubing on my AIO cooler (Corsair GTX H100i) and I was wrong, the tubes were certainly warmer than usual, however, the radiator fans were still blowing cold air. I then checked Corsair Link 4, and it told me that the pump was working, and I can also hear it, as its the loudest thing in my computer. And then I stress tested it in Real Bench just to see if maybe that would tell the cooler "Hey dipshit! are you gonna work or not?" My computer responded with a CPU temp of 88-90 degrees and a bluescreen, which I guess was a thermal safety feature or something. So now I have my CPU underclocked to 1GHz and a voltage of .650.

Specs:
CPU: i7 6700k (stock 4.0GHz, at the time of the issue 4.6 [This was not the issue as I had that OC stable for weeks], and now 1)
GPU: GTX 960 4GB
Mobo: MSI Z170A
PSU: Corsair CX650M
RAM: 8GB (not real sure what brand)
CPU Cooler: Corsair GTX H100i AIO liquid cooler (AKA the problem child)

What I want to know:
1. What is causing the temp problem and how do I fix it?
2.How do I know if the CPU has been damaged? (From overheating)
3 answers Last reply Best Answer
More about cpu 6700k dangerously hot sudden
  1. Check your fan and pump profiles to see that they are set appropriately and check the water block mounting to make sure it is seated properly. Check the radiators for obstructions. If all these are OK, the pump may be failing or low on coolant. The CPU is thermally protected and as long as the system boots fine, no permanent damage should have been done.
  2. BadActor said:
    Check your fan and pump profiles to see that they are set appropriately and check the water block mounting to make sure it is seated properly. Check the radiators for obstructions. If all these are OK, the pump may be failing or low on coolant. The CPU is thermally protected and as long as the system boots fine, no permanent damage should have been done.

    Well, the fans always run at max, according to the sensors anyway, and I cant change it, not that i would want to anyway.
    I have dusted the radiator and fans to the best of my ability so i dont think obstructions would be an issue. I didn't know that closed loop coolers could lose fluid, but maybe thats it. I guess ill just call corsair and see if they will replace it or not, assuming I cant refill it.
  3. Best answer
  4. Redo mounting, clean thermal grease and replace (try top brand such as arctic MX4).
  5. The issue is 4.6GHz, at that speed your 6700K bump to its thermal design limit, the reason why it's been stable for weeks because even though had been running @4.6GHz there were no actual 100% continuous load for long period of time, usually @ certain GHz we stress (prime95 or CPU rendering) CPU for good 1 hour, that has always been standard steps to find out- Cooler TDP capacity- Silicone thermal limit- Motherboard+PSU ASIC percentileTo conform it was CPU issue try 100MHz lower > stress CPU for 1 to 12 hours * if failed lower another 100MHz until your system freeze/stutter free.
  6. If you're sure coolant evaporation/leakage is what causing it, RMA it. Low on coolant = contact Corsair and ask GTX 100i weight, compare with yours.
Ask a new question

Read More

Water Cooling Overheat CPUs Gaming PCs Corsair Intel i7