Windows & BSOD · critical

How to fixCLOCK-WATCHDOG-TIMEOUT

CLOCK_WATCHDOG_TIMEOUT (0x00000101)

What this error means

CLOCK_WATCHDOG_TIMEOUT (0x00000101) is a critical-severity Windows operating system issue. The processor waited too long for a response from another processor or core and caused a BSOD. Common triggers are unstable CPU or RAM overclocking (XMP) and incorrect setting of C-states in BIOS. Use the steps below to track down and fix the cause.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Disable XMP/EXPO and leave RAM at JEDEC speed

Disable XMP/EXPO and leave RAM at JEDEC speed.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Reset BIOS to default

Reset BIOS to default.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Reduce CPU power in idle state (Idle)

Reduce CPU power in idle state (Idle).

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Unstable CPU or RAM overclocking (XMP)
  • Incorrect setting of C-states in BIOS
  • Defective processor (rare)

Useful Windows tools

These commands open Windows tools. Review any action inside the tool before applying changes.

msinfo32