If your USB drive is not detected when you plug it in, this guide will help you find the cause and fix it. These steps are safe and work on all versions of Windows.
Quick Checks
- Try a different USB port
- Restart the computer
- Test the USB drive on another PC
- Check for a loose or damaged connector
Windows Checks
- Check Device Manager
- Look for driver errors
- Scan for hardware changes
- Disable USB selective suspend
Disk Management Checks
- See if the USB drive appears without a letter
- Assign a drive letter
- Check if the drive shows as unallocated
- Check if the drive shows as RAW
Possible Causes
- Faulty USB port
- Driver issue
- Corrupted partition
- Damaged USB controller
- Fake‑capacity USB drive
Next Steps
- Try a full format (not quick format)
- Rebuild the partition
- Test the drive with a USB diagnostic tool
- Back up data immediately if the drive appears intermittently
More detailed USB troubleshooting pages will be added as the site grows.