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CPU Fans stopped during stress test, not sure of cause

post #1 of 3
Thread Starter 
Hi guys, I've been running this system for almost 2 years and finally decided to try overclocking it. System specs:

i7-5820k
MSI x99s SLI Plus
Noctua NH-D14 cooler
Seasonic x-850 psu

Before overclocking, I installed the latest BIOS from MSI, I upgraded my OS to Windows 10, and I installed MSI Command Center. I am running a modest overclock of 3.8ghz at 1.05v. I setup a custom fan profile that is fairly aggressive, with the CPU fans going to 100% at 65 degrees.

I had CPU-Z, RealTemp, and MSI Command Center running while I ran prime95 in blend mode. My highest core temps were bouncing between 66-68 degrees for the 15 hours I ran it before I went to bed. When I woke up in the morning, my temps were bouncing between 78-80, and I could see that they peaked at 83 degrees a few hours earlier. I looked at the Command Center app and it was reporting fan speed on one CPU fan as 0 RPM and the other at 1100 RPM, then as I was watching the other CPU fan dropped to 0 RPM and stayed there as well. I looked in the case, and sure enough neither fan was spinning. I tried to exit Command Center and it became unresponsive to my clicks, although the UI was still refreshing with data.

I restarted the computer, and both fans started up just as they should. I ran prime95 again, and both fans followed the custom fan profile.

Has anyone seen this before? Is this a bug in the BIOS? A bug in the MSI Command Center?

Its nice to know the CPU didn't overheat even with no fans running, but obviously that is not ideal. Any suggestions? I'm thinking of maybe connecting the middle CPU fan directly to the PSU just in case.

Thanks
post #2 of 3
I heard about a virus a while back that shut off the CPU fans, hopefully it's not that!

Sounds like it would be a firmware glitch on the motherboard or software glitch with MSI Command Center.
Can you try setting your overclock in the BIOS and taking MSI CC out of the equation? Might give a better idea of who's responsible!
Ol'Faithful
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Xeon x5660 P6X58D-E XFX AMD Radeon R9 280X Corsair Vengeance 24 GB Triple Chanel 6x4GB 
Optical DriveCoolingOSMonitor
Lite-On DVD-RW Noctua DH-14 CPU Cooler Windows 7 Pro x64 Samsung 24" LED 1080p 5ms DVI (S23A300B) 
PowerMouseAudio
Thermaltake Toughpower 750W Gold Corsair M95 Onboard :S 
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Ol'Faithful
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Xeon x5660 P6X58D-E XFX AMD Radeon R9 280X Corsair Vengeance 24 GB Triple Chanel 6x4GB 
Optical DriveCoolingOSMonitor
Lite-On DVD-RW Noctua DH-14 CPU Cooler Windows 7 Pro x64 Samsung 24" LED 1080p 5ms DVI (S23A300B) 
PowerMouseAudio
Thermaltake Toughpower 750W Gold Corsair M95 Onboard :S 
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post #3 of 3
I have a case fan that goes off from time to time when the computer heats up. No idea why. I use a custom fan profile with the gigabyte software which have the fans turn off on idle.
Gaming Computer
(19 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6600 Asustek P5Q-PRO Nvidia 9800 GTX+ Kingston DDR2 8gb 
Hard DriveOptical DriveCoolingOS
Western Digital 1 TB Pioneer Noctua NH-U9B Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
Dell Monitor Logitech G110 Antec 750W Thermaltake Aluminium Old Case 
MouseMouse PadAudio
Logitech G500 Gaming Mouse Generic Mousepad Soundblaster 5.1 VX 
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Gaming Computer
(19 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6600 Asustek P5Q-PRO Nvidia 9800 GTX+ Kingston DDR2 8gb 
Hard DriveOptical DriveCoolingOS
Western Digital 1 TB Pioneer Noctua NH-U9B Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
Dell Monitor Logitech G110 Antec 750W Thermaltake Aluminium Old Case 
MouseMouse PadAudio
Logitech G500 Gaming Mouse Generic Mousepad Soundblaster 5.1 VX 
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