1. Disable Driver Verifier
- Boot into Safe Mode.
- Open Command Prompt (Admin).
- Run: verifier /reset
- Restart the system to disable Driver Verifier.
2. Update or Roll Back Drivers
- Open Device Manager.
- Update outdated drivers using official manufacturer sources only.
- Roll back recently installed drivers if the BSOD began after a driver update.
- Pay close attention to graphics, network, storage, and chipset drivers.
3. Repair Corrupted System Files
- Open Command Prompt (Admin).
- Run: sfc /scannow
- After completion, run: DISM /Online /Cleanup-Image /RestoreHealth
- Restart the system once both scans complete.
4. Test RAM for Memory Errors
- Open the Run dialog.
- Run: mdsched.exe
- Restart and allow Windows Memory Diagnostic to complete.
- Test RAM modules individually if errors are detected.
- Replace faulty memory hardware if required.
5. Uninstall Conflicting Third-Party Software
- Boot into Safe Mode.
- Uninstall recently added kernel-level software such as antivirus programs, virtualization tools, overclocking utilities, or hardware monitoring applications.
- Restart normally and check for system stability.
6. Check Disk and File System Integrity
- Open Command Prompt (Admin).
- Run: chkdsk C: /f /r /x
- Restart the system and allow the disk scan to complete.
7. Reset BIOS/UEFI Settings
- Enter BIOS or UEFI during system startup.
- Select Load Optimized Defaults.
- Disable all CPU, GPU, and RAM overclocking.
Save changes and exit.
8. Perform a Clean Boot
- Press Windows + R.
- Run: msconfig
- Hide all Microsoft services and disable remaining services.
- Open Task Manager and disable all startup applications.
- Restart and monitor system behavior.
9. Install Latest Windows Updates and Firmware
- Open Windows Update.
- Install all available updates, including optional driver updates.
- Update motherboard BIOS or UEFI firmware to the latest stable version.
10. Perform an In-Place Upgrade or Clean Install
- Use the Windows Installation Media Tool.
- Choose Upgrade this PC now to repair Windows without data loss.
- If the BSOD continues, back up important data and perform a clean installation.
The 0x000000CF (DRIVER_LEFT_LOCKED_PAGES_IN_PROCESS) BSOD is primarily caused by drivers that fail to release locked memory pages, along with corrupted system files, unstable memory, or kernel-level software conflicts.
To resolve this error effectively:
- Disable Driver Verifier if enabled.
- Update or roll back faulty drivers.
- Repair system files using SFC and DISM.
- Test RAM and verify disk health.
- Remove conflicting third-party utilities.
- Reset BIOS or UEFI settings and keep Windows updated.
If the issue persists, an in-place repair or clean installation provides a complete and reliable resolution. Maintaining stable drivers, healthy memory, and updated firmware helps permanently eliminate the 0x000000CF BSOD and ensures long-term Windows stability.