1. Eject and Inspect Physical Media
If you were using a CD/DVD at the time of the crash:
- Eject the disc and inspect for scratches, dirt, or damage.
- Try using a different disc or clean the current one thoroughly.
2. Update or Reinstall CD/DVD Drivers
- Press Win + X, then open Device Manager.
- Expand DVD/CD-ROM drives, right-click the device → Update driver.
- If that doesn’t help, uninstall it and restart your system to reinstall automatically.
3. Remove Problematic Virtual Drive Software
- Go to Control Panel → Programs and Features.
- Uninstall software such as Daemon Tools, PowerISO, or other ISO mounting tools.
- Reboot and check system stability.
4. Run System File Checker and DISM
- Open Command Prompt as Administrator, then run:
sfc /scannow
- After that, run:
DISM /Online /Cleanup-Image /RestoreHealth
These tools fix corrupted system files, including cdfs.sys.
5. Disable AutoPlay for Optical Drives
- Go to Control Panel → AutoPlay.
- Uncheck or disable automatic playback options for CDs/DVDs to prevent auto-access issues when media is inserted.
6. Check Event Viewer Logs
- Open Event Viewer by pressing Win + X → Event Viewer.
- Navigate to Windows Logs → System and filter for errors related to cdfs.sys, CDROM, or File System.
- This can help identify recurring failures or driver interactions.
7. Perform System Restore
If the problem began recently:
- Go to Control Panel → Recovery → Open System Restore.
- Choose a restore point before the issue starts and complete the restoration process.