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CPU overheating, Insane 126°C Temperature.

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Posted · Original PosterOP

I have this weird issue with my new build, the CPU always shows 126 °C, and that's insane. Also the all of the fans including CPU fan, case fans (system fan header) rpm only shows 0 RPM, but it spins normally? The motherboard shows 0 °C  temperature, that's impossible unless i have a snowstorm inside my pc case. The voltage is also dangerously high, 4v on DDR4? That's like 200% more than maximum safe ddr4 voltage! Already updated to lastest bios, but it doesn't fix the problem.


The thing i've done to try to fix this problem

  • Reapplying Thermal Paste Twice
  • Reseating CPU and CPU cooler
  • Resetting Bios
  • Disassembled everything and build it again from scratch


System Specs

  • Intel I5 9400F (Stock Cooler)
  • 16GB DDR4 from team
  • Zotac RTX 2060 6GB
  • Super Flower Bronze king 550W 80+
  • BIOS : Lastest Version (E782IMS.A60 / 7B24vA6)
  • OS : No OS yet
  • No overclocking, everything is stock.




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It sounds like you might have a faulty sensor or motherboard.


Your CPU would not be running if it was truly 126C.

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Try to apply and under-volt, the CPU vcore, it's a bit hight for that processor. 

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It seems that the motherboard has voltage (and maybe other) sensors that are faulty/failed, so for safety purposes an RMA would be best.

Daily Driver: Xiao Mi Notebook Air 13.3" - i5-8550U, MX150, 8GB DDR4 RAM, 256GB NVME SSD+500GB SATA SSD

Gaming Laptop: Gigabyte Aero 15X - i7-8750H, GTX 1070MQ, 16GB 2666, 500GB Toshiba NVMe SSD + 1TB EX 920 NVMe SSD

Battle Station: Core i7-8700K @ 5.0 GHz (w/ Corsair H75), MSI Aero GTX 1070 Ti, 32GB Corsair Vengeance LPX 2666, 500 GB Samsung 970 Evo, 2x500GB Samsung 850/860 Evos in RAID 1; Built in a Fractal Design Node 202.

Other PCs I own:

Apple PowerMac G4 Quick Silver

Apple Powerbook G4 Titanium 12", 1.33Ghz PPC G4, 512MB DDR RAM, GeForce FX Go5200 64MB GPU, 60GB IDE HDD

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