If you receive:

<b>   Event Type:      Error
   Event Source:    WinMgmt
   Event Category:  None
   Event ID:        37
   Date:            2/7/2000
   Time:            10:05:55 AM
   User:            N/A
   Computer:        \[machinename\]
   Description:     WMI ADAP was unable to load the perfproc.dll
                    performance library due to an unknown problem within
                    the library: 0x0 </b>
the Performance Library Dredger thinks that the library is invalid, even though the counter works properly.

To resolve the issue, open a CMD prompt and type:

winmgmt /clearadap

                or

winmgmt /resyncperf -p <processID>

where <processID> is the processID of the running WINMGMT process.