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Bluescreen Error: DPC_WATCHDOG_VIOLATION

After upgrading to Windows 10, the following bluescreen error may occur:

DPC_WATCHDOG_VIOLATION

For those who experience this error, it occurs occasionally but repeatedly and seemingly at random.  The PC then collects information and restarts.  The Bug Check code for this bluescreen is 0x00000133.

How do I resolve this error?

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Answer
Answer

Hello,

This error may occur due to the iastor.sys driver, which is not fully compatible with Windows 10. 

Microsoft is currently investigating a solution to prevent the driver from being migrated when upgrading to Windows 10.  For those of you already on Windows 10, you can work around this error by replacing the problematic driver with the Microsoft storahci.sys driver by following these steps:

  1. Right-click the Start icon and select Device Manager.

  2. Expand IDE ATA/ATAPI controllers.

  3. Select the controller with “SATA AHCI” in its name (such as Standard SATA AHCI Controller).  To verify that you’ve selected the right controller, right-click the controller, select Properties, click the Driver tab, and then Driver Details.  Verify that iastor.sys is a listed driver, and click OK.

  4. From the Driver tab, select Update Driver…

  5. Select Browse my computer for driver software.

  6. Select Let me pick from a list of device drivers on my computer.

  7. Select Standard SATA AHCI Controller.

Click Next, then Close, and then restart your computer.

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Question Info

Last updated April 22, 2025 Views 442,935 Applies to: