Windows does not recognize the device in the device manager, the device has a code ("Device ID") ACPI/VPC2004.
The above symptom may occur on the following systems:
All Ideapad and Essentials laptops
Download and run Energy/power Management or OneKey Optimizer from Lenovo support website
with the proper Operating System version.
This will install the chipset INF files so that Windows will properly recognizes the virtual power controller ACPI/VPC2004.