If you are using any Intel® Xeon® Processor of the 5300 or the 5400 series in the Intel® S5000VSA Server Board or S5000PSL Server Board and install Microsoft Windows* Server 2008 on the system, you may encounter the following error in the Windows* event log:

The Event Error has to do with a change in Microsoft’s validation and logging of supported P-States for a processor. The wording of the error that is being displayed is misleading. There is no performance impact.  The reason Microsoft is logging the error, is because the BIOS has a default PSS object (P-State info) in the ACPI space for these processors. Basically this default PSS object indicates no P-State supported. However, Microsoft Windows* Vista and Microsoft Windows* Server 2008 have changed interpretation of this table.

Intel will address this issue in a future BIOS release, scheduled for later in Q3/2008.

Operating System:

Windows Server* 2008

This applies to:

Intel® Server Board S5000PSL Intel® Server Board S5000VSA