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      Unknown Device in the device manager, code is ACPI/VPC2004

      Symptom

      Windows does not recognize the device in the device manager, the device has a code ("Device ID") ACPI/VPC2004.

      Affected Brands

      All Ideapad and Essentials laptops

      Solution

      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.

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      • Alias ID: IN20100524-007
      • Document ID: HT071645
      • Last Updated :30 Jun 2016
      • © 2016 Lenovo