System logs showing "Disk I/O Error"
4.5
The event viewer is filled with warnings about failed read/write operations.
Symptoms
- System freezes
- Slow performance
- Event ID 7, 11, or 15
Possible Causes
- Failing HDD/SSD
- Loose SATA cable
- Driver corruption
Step-by-Step Fix
1
Run CHKDSK
Run "chkdsk c: /f /r" to find and fix bad sectors.
2
Check SMART Status
Use a tool like CrystalDiskInfo to see the drive's health.
3
Replace the Drive
If I/O errors are frequent, the drive is dying. Backup data immediately.
When to See a Technician
Disk I/O errors are the #1 sign that you need a new hard drive.
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