1. Update or Roll Back Device Drivers
- Press Win + X → Open Device Manager.
- Focus on high-memory devices like display adapters, RAID controllers, and network interfaces.
- Right-click → Update Driver or Roll Back Driver as needed.
2. Increase PTE Allocation via Registry
Open Registry Editor (regedit) and navigate to:
- HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
- Create a new DWORD (32-bit) value named: SystemPages
- Set it to FFFFFFFF (hex) to let Windows dynamically manage PTEs.
- Reboot the system.
3. Run System File Checker and DISM
- Open Command Prompt as Administrator and run:
- sfc /scannow
- Then:
- DISM /Online /Cleanup-Image /RestoreHealth
- This tools repair system corruption that might affect memory management.
4. Reduce Memory Usage by Devices
If using hardware with high memory demands:
- Lower video memory allocation in BIOS
- Disable unused onboard devices (e.g., parallel/serial ports)
- Disconnect non-essential peripherals
5. Perform Clean Boot
- Press Win + R → Type msconfig → Enter
- Under Services → Check Hide all Microsoft services → Click Disable all
- In Startup tab → Open Task Manager → Disable all startup items
- Reboot to test memory stability under minimal load
6. Install Latest Windows Updates
- Go to Settings → Update & Security → Windows Update
- Apply all critical and cumulative updates
- Improved kernel memory and PTE management is included in newer patches
7. Perform System Restore
If the error began recently:
- Go to Control Panel → Recovery → Open System Restore
- Choose a restore point before the problem started
- Complete the guided process
Final Thoughts
The 0x0000003F NO_MORE_SYSTEM_PTES error reflects a system memory management failure, typically caused by excessive memory usage or poorly written drivers consuming page table entries.
To fix it:
- Update memory-heavy device drivers,
- Increase PTE allocation in the registry,
- And reduce system memory pressure from hardware or software.
If none of these steps resolve the issue, consider:
Running a complete memory diagnostic or removing faulty devices,
Or performing a clean Windows installation to refresh the memory management subsystem.