0x00000101_
Clock Watchdog Timeout
The error 0x00000101 on Windows 10/11 indicates a specific failure categorized as "Clock Watchdog Timeout" 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: a secondary CPU core failed to respond within the allotted interval.
Symptoms
Blue screen appears with stop code CLOCK_WATCHDOG_TIMEOUT
Common Causes
- Kernel condition: a secondary CPU core failed to respond within the allotted interval
- Outdated or conflicting third-party driver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 CLOCK_WATCHDOG_TIMEOUT (0x00000101) 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