0x0000007F_
Unexpected Kernel Mode Trap
The error 0x0000007F on Windows 10/11 indicates a specific failure categorized as "Unexpected Kernel Mode Trap" under BSOD (Blue Screen). This guide walks you through the most likely causes and the correct fix order.
What Actually Happened
Windows kernel halted due to: the CPU generated a trap the kernel did not expect, commonly hardware related.
Symptoms
Blue screen appears with stop code UNEXPECTED_KERNEL_MODE_TRAP
Common Causes
- Kernel condition: the CPU generated a trap the kernel did not expect, commonly hardware related
- Outdated or conflicting third-party driver
- Overheating or failing hardware (RAM/SSD)
How to Fix It
-
01
Boot into Safe Mode and roll back recently installed drivers
-
02
Run memory diagnostic:
mdsched.exe -
03
Run system scan:
sfc /scannow && DISM /Online /Cleanup-Image /RestoreHealth
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Root Cause Breakdown
Stop code UNEXPECTED_KERNEL_MODE_TRAP (0x0000007F) triggered a bugcheck to protect memory integrity.
Should You Worry?
Urgent. Save work frequently to avoid data loss.
Power-User Tip
Check minidump logs in C:\Windows\Minidump to identify the failing .sys file.
Software fix: $0; Hardware replacement: $50�$250