If you've downloaded the most recent GeForce 595.59 WHQL Game Ready driver, you'll want to roll back to 591.86 instead, using ...
A bug in NVIDIA's 595.95 driver release led to its temporary removal. If you already installed it and are having fan control issues, NVIDIA advises rolling back.
GeForce Game Ready Driver 595.59 is said to disable one of the fans on Nvidia RTX 30-series and newer GPUs, even without third-party apps like MSI Afterburner.