NEC Express5800 User Manual page 275

Notes on Using Windows Server 2008
The following event will be logged in Event Viewer if power control feature is used on Windows
Server 2008. However, it is not the problem in operating the system, the event is logged because the
P-State is controlled by the server side.
Event ID:
Source:
Level:
Description: The speed of processor 0 is being limited by system firmware. The
7
Kernel-Processor-Power
Warning
processor has been in this reduced performance state for 71 seconds since
the last report.
Maintenance 7-11