Laptop unable to open Device Manager
4.5
The hardware management console fails to load or shows a blank screen.
Symptoms
- Blank window
- MMC error
- Snap-in failed
Possible Causes
- Corrupt MMC configuration
- Missing system files
- Permissions issue
Step-by-Step Fix
1
Run devmgmt.msc directly
Try running it from the Win+R dialog.
2
Fix MMC Snap-in
Delete the MMC configuration file in AppData.
3
Check for Windows Updates
System management tools are often fixed in cumulative updates.
When to See a Technician
If Device Manager is blank, the "Plug and Play" service might be disabled.
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