ErrorFindly
0x0000003FBSODCritical

0x0000003F — No More System Ptes | Blue Screen Fix Guide

NO_MORE_SYSTEM_PTES

Windows XPWindows VistaWindows 7Windows 8Windows 10Windows 11

What Does 0x0000003F Mean?

The system ran out of Page Table Entries (PTEs). No more system PTEs are available for mapping.

Real-World Causes

  1. 1Driver leaking system PTEs
  2. 2Too many I/O operations consuming PTEs
  3. 3System running very low on resources

Symptoms

  • ⚠Blue screen with stop code NO_MORE_SYSTEM_PTES
  • ⚠System reboots unexpectedly
  • ⚠Possible data loss from unsaved work

DIY Fix

Beginner-friendly steps you can try at home

  1. 1Restart your computer
  2. 2Run Windows Memory Diagnostic (mdsched.exe)
  3. 3Reseat RAM modules
  4. 4Check for Windows updates

Advanced Fix

For experienced users and IT professionals

  1. 1Test RAM with MemTest86 for multiple passes
  2. 2Analyze minidump with WinDbg
  3. 3Check for memory leaks using poolmon
  4. 4Inspect physical RAM slots and modules

Frequently Asked Questions

What causes NO_MORE_SYSTEM_PTES?
The system ran out of Page Table Entries (PTEs). No more system PTEs are available for mapping.
Can I fix No More System Ptes myself?
In many cases yes. Start with basic troubleshooting like restarting, updating drivers, and running System File Checker. If the issue persists, advanced analysis of crash dumps may be needed.

Related Error Codes

0x000000D8Driver Used Excessive Ptes0x000000DASystem Pte Misuse

About the Author

Windows Troubleshooting Team

Verified against official Microsoft documentation and real-world diagnostic data. Error behavior confirmed across Windows 10, Windows 11, and Windows Server.