Peformance Monitor does not monitor/collect data

I administer a number of SBS 2003 R2 boxes for various organizations. On
one of them, perfmon no longer works. The Performance Monitor console
opens, but does not graph data. (Visually, the red line stays to the left
and never tracks across the main right-hand pane.) The "Last, Average,
Minimum, and Maximum" boxes across the bottom display "———". Starting
a Counter Log (such as the System Overview log) creates a file that even
after sufficient time has elapsed, contains no performance data. (Trying to
view the log data in perfmon results in the following error when trying to
open the log file: "System Monitor Control – Data source
C:\PerfLogs\System_Overview.blg in invalid. The data source contains fewer
than two data samples.")

I’ve followed one of the few suggestions found online as a possible fix to
this, which was to copy all the perf*.dat files from the I386 folder to the
system32 folder. This didn’t fix it. I can’t find any other options to
repair perfmon other than a reinstallation or repair of windows, which are
not viable options for this.

Any ideas on this? All thoughts appreciated.

Thanks in advance.

Bryan