ErrorFindly
0x00000157BSODCritical

0x00000157 — Kernel Thread Priority Floor Violation | Blue Screen Fix Guide

KERNEL_THREAD_PRIORITY_FLOOR_VIOLATION

Windows 10Windows 11

What Does 0x00000157 Mean?

A thread priority floor violation was detected in the kernel scheduler.

Real-World Causes

  1. 1Driver thread priority management error
  2. 2Scheduler subsystem error
  3. 3Priority inversion issue

Symptoms

  • ⚠Blue screen with stop code KERNEL_THREAD_PRIORITY_FLOOR_VIOLATION
  • ⚠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 System File Checker (sfc /scannow)
  3. 3Check Windows Update
  4. 4Run DISM /Online /Cleanup-Image /RestoreHealth

Advanced Fix

For experienced users and IT professionals

  1. 1Analyze minidump with WinDbg
  2. 2Check Event Viewer for correlated errors
  3. 3Use Process Monitor to trace system activity
  4. 4Perform clean boot to isolate the cause

Frequently Asked Questions

What causes KERNEL_THREAD_PRIORITY_FLOOR_VIOLATION?
A thread priority floor violation was detected in the kernel scheduler.
Can I fix Kernel Thread Priority Floor Violation 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

0x0000013AKernel Auto Boost Invalid Lock Release0x00000162Kernel Auto Boost Lock Acquisition with Raised IRQL

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.