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Unusual GPU fan speed spikes

Last response: in Graphics & Displays
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March 31, 2014 7:25:27 AM

Hi all,

A few weeks back my MSI N770 lightning's fans started spiking for no reason even when my computer was on idle. Here's a SS from my Afterburner readout: http://imgur.com/os4vFI0

The Nvidia drivers in SS are an old version as I was trying to see if rolling back my drivers would work, but no matter which version I use (including the latest one) the problem still persists. Have never overclocked my video card.

I've tried also:

- Checking the card/fans for dust build up and reconnecting the power supply to the fans.

- Different settings on Afterburner, turning off auto fan control, turning on user fan profile, setting the fan speed at 100% and then back, setting everything to it's lowest possible value.

- Uninstalling and reinstalling Nvidia Drivers. Uninstalling all the extra Nvidia stuff (HD audio/3D etc.) leaving just the video card drivers. Rolling back to older drivers.

My System Specs:

Windows 7 64-bit
i5 4670
Asus z87-a
8GB RAM (Corsair vengeance)
Seasonic x850

If anyone has experience with this problem or know what I should do, your advice would be greatly appreciated! Thank you for your time.
March 31, 2014 7:27:18 AM

Try enabling user defined software automatic fan control in the afterburner settings, see if the problem goes away.

Set a proportional fanspeed to temperature starting at say 35% for 40degrees and ending at 100% at 75 degrees.
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March 31, 2014 7:33:14 AM

sunder25 said:
Try enabling user defined software automatic fan control in the afterburner settings, see if the problem goes away.

Set a proportional fanspeed to temperature starting at say 35% for 40degrees and ending at 100% at 75 degrees.


Thanks for fast reply. Unfortunately I've already tried that, the fan speed % follows accordingly but the RPM still constantly spikes.
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March 31, 2014 7:35:14 AM

It might be a problem with the fan's voltage regulator then.
You may have to return the card for warranty.
Try it in another computer if available to make sure the problem is card-related.
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March 31, 2014 7:44:12 AM

sunder25 said:
It might be a problem with the fan's voltage regulator then.
You may have to return the card for warranty.
Try it in another computer if available to make sure the problem is card-related.


Hmm, it's as I feared. Unfortunately I don't have another computer to test it, I might have to bring it back to the shop.
Ok, thanks for the advice!
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March 31, 2014 7:47:54 AM

Good luck with your card, glad to help.
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