1. Remove ALL existing NVidia drivers, then use 'DDU' software to remove NVidia registry entries as well as disable automatic driver installation. Reboot system and load latest NVidia desktop driver:  https://www.techinferno.com/index.php?/forums/topic/9289-optimus-now-works-in-win10-using-36175-driver/   2. Free up dGPU resources:  Go to Device Manager -> View Devices By connection. Find your D500
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