Since opening my G73 for a DIY repair on a bad DC jack pin, my GPU-side fan now ramps up to a very loud level, even when sitting idle. It has been barely audible for over a year, unless gaming, and even then, it's only what I would call "loud" for several minutes at a time. For the last two days, it randomly go's from loud to quiet, with no apparent regard to how hard the GPU is actually working.
I have been sifting through these forums and find my issue is not unique. From this site, I learned to install HWiNFO64 as part of the diagnostic process. That in itself proved a challenge and the issues I've had with that program may be a symptom to my fan issues.
Upon install of HWiNFO64, only the CPU fan was shown under the "ASUS G73 EC" heading. Try as I may, I could not get the GPU fan to show up.
By chance, I started the game, Eve online, and within several minutes, the GPU fan speed (5000+) was suddenly shown in HWiNFO64. Once the fan speed was recognized in HWiNFO64, the GPU fan began to operate "Appropriately" and throttle up and down as it had before. As soon as I left the game, the "Current" fan speed would drop to "0", and after several minutes, the fan would again get loud. I repeated these results several times, re-starting between.
Loading WOT produced the same results. I could surf or do anything else and the fan would go from loud (5000+ RPM) to quiet on random intervals. When I loaded WOT, HWiNFO64 again suddenly recognized the GPU fan and it immediately began throttling the fan temp appropriate. Only difference is while typing this and doing other things, I have been out of WOT for over 20 minutes and the fan is still quite at HWiNFO64"s reported 2200 RPM.
So why does HWiNFO64 only see my GPU fan when I start a game? What might be causing the GPU fan issue. Thanks.