Laptop unable to open Performance Monitor
4.5
The "perfmon" tool fails to load or shows no data.
Symptoms
- Blank graphs
- Snap-in error
- App crash
Possible Causes
- Corrupt performance counters
- WMI service issue
- Permissions
Step-by-Step Fix
1
Rebuild Performance Counters
Run "lodctr /r" in an admin command prompt.
2
Restart WMI Service
Performance data relies on WMI.
3
Check for System File Corruption
Run SFC and DISM.
When to See a Technician
If counters are missing, many third-party monitoring apps (like HWInfo) will also show zero values.
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