Sunday, September 2, 2012

Microsoft ACPI-Compliant Power Meter Device unsigned driver

Windows 2008 R2 cluster validation wizard reports a System Configuration warning about an unsigned driver: Microsoft ACPI-Compliant Power Meter Device. Driver Name: Value Not Found

The problem was missing files acpipmi.ini and acpipmi.pnf from the Windows\inf directory. It seems the files have been deleted after installing EMC PowerPath. So back them up before installing PowerPath or if you have already installed it copy them from another similar Windows 2008 R2 installation.

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