Never heard of this before, but it could be a possibility.Maybe the built-in driver for the HD(?)8470 is so old, that it doesn't support the Task Manager API calls / hooks for reporting GPU usage.
No, it's the main PC. Not VM.Also, I see references to VMWare, if this is a VM, then yeah...
Like I said I plugged in 2nd monitor into on-board INTEL iGPU and AMD GPU still won't show.Task manager likes to hide devices that are not in use.