◆Error Codes Wiki

Windows Event ID 41 Kernel-Power — Unexpected Shutdown or Restart

Errorsystem

Overview

Event ID 41 Kernel-Power indicates Windows rebooted without cleanly shutting down first, caused by power failures, hardware faults, or kernel crashes.

Key Details

  • Event 41 is logged in Event Viewer after an unexpected reboot with no clean shutdown record
  • Also known as the 'kernel-power 41 (63)' error — BugcheckCode 0 means no BSOD was captured
  • Can indicate sudden power loss, hardware reset, or unrecorded BSOD
  • If BugcheckCode is non-zero, a BSOD occurred but the dump was not saved
  • Very common with gaming PCs during high GPU/CPU load

Common Causes

  • Insufficient or failing power supply unit (PSU) not delivering enough wattage
  • Overheating causing emergency thermal shutdown
  • Unstable overclock crashing the system before BSOD can be logged
  • Faulty power cable, surge protector, or wall outlet
  • Driver crash so severe that the BSOD blue screen could not be displayed

Steps

  1. 1Check Event Viewer > Windows Logs > System for events around the same timestamp
  2. 2Monitor PSU voltages with HWMonitor — 12V rail should be between 11.4V-12.6V
  3. 3Check CPU and GPU temperatures during load with stress tests (Prime95, FurMark)
  4. 4Remove any overclock and test at stock settings
  5. 5Try a different power outlet and bypass surge protectors to rule out power supply issues

Tags

windowsevent-id-41kernel-powershutdownpsu

More in System

windows-C000021A-status-system-process-terminatedWindows Error 0xC000021A — STATUS SYSTEM PROCESS TERMINATED
Critical
windows-C0000225-boot-configuration-errorWindows Error 0xC0000225 — Boot Configuration Error
Critical
windows-C000000F-boot-selection-failedWindows Error 0xC000000F — Boot Selection Failed
Critical
windows-80004005-unspecified-errorWindows Error 0x80004005 — Unspecified Error
Warning
windows-80070570-file-or-directory-corruptedWindows Error 0x80070570 — File or Directory Corrupted
Error
windows-system-0xc0000185Windows Error 0xC0000185 — Boot Device Inaccessible
Critical

Frequently Asked Questions

BugcheckCode 0 means no BSOD was captured — the system lost power or reset so abruptly that no crash dump could be written.