Hi,

I've got a Zotac 980ti with an EVGA Hybrid cooler added to it. I know. Try getting a Hybrid 980ti on release month in the UK.. 

The set up works fine 99.9% of the time and decent temps etc and I've got a fairly tasty overclock going on.

The problem, as the title suggests, is that randomly, when I am AFK and the system is idle, lock screen or not logged in/sitting on the desktop the fans randomly speed up and down in 5/10 second intervals and when I look inside of Precision X and Corsair Link both read 92c. 
If I restart the system the issue persists, but a shut down and boot from cold seems to banish it, returning nice idle temps of 29c.
This has happened maybe 5 times in the last several months, over various builds of Windows 10 and multiple GPU drivers from Nvidia.. 

SO, potential causes? I think it's a software bug. I don't want to think that it's a faulty hardware issue as it's so intermittent and is easily resolved by cold booting. I am flapping however, warranty concerns and what not.  


Some other info that might be useful.
5820k @ 4.4 on water
16gb 2133 DDR4
980ti Ref Zotac with Hybrid EVGA cooler
MSI x99 Krait Edition
Corsair Hx850 Psu.

Background/launch apps; McAfee, Corsair Link, Precision X, Steam, Origin, Curse, Skype, Adobe CC, Autodesk Application Manager and Google Drive.
None of which will likely be the cause If the system hasn't been logged in, I assume.

Was the hybrid pump still running when this was occurring?