Question GPU Fan showing 0 rpm in software, but it's spinning full blast ?

Nov 25, 2023
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I recently got a used 3060 Phoenix, works flawlessly except for how the fan runs very loud - it seems like 100% - all the time. However, no software is recognising the fan (all say 0 rpm)
-- This problem occurs after startup,
--The fan works regularly (not like a jet engine) in motherboard BIOS, Safe mode, and after uninstalling the graphics card drivers.
-- the moment any Nvidia graphics drivers are installed the fan instantly goes to jet mode -- when none are on the system it works fine.
-- no software can change the fan rpm from 0 ( when fan speed is changed from 30% nothing happens)
-- GPU is chilled at 23-27 degrees at idle
-- I deshrouded and reapplied thermal paste and disconnected and connected the fan from GPU - the problem still happens

Any help is greatly appreciated.
 
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I bet this is an old mining card - if you know the exact model you may be able to find and re-flash the original BIOS, as I suspect what you have on the card right now has been edited.
i thought about reflashing but do not want to brick the card. Im still in contact with the old owner and he says his friend thinks it might be a bios issue as it worked perfectly for him apparently.