Thanks for looking at it Martin!
Note that GPU Temperature is missing in my screenshot because the GPU was "sleeping". I'm running on a laptop with Optimus, so the Nvidia GPU is not always active. After running an app on the GPU, then it wakes up and the temp is available. GPU Power still is...
I'm also seeing this issue. Windows 10 1903, the latest Nvidia DCH driver is installed, nvml.dll is present in C:\Windows\System32, but hwinfo v6.12 does not show GPU Power.
I'd be happy to help troubleshoot if you like. Thanks.