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0x00000133DPC_WATCHDOG_VIOLATIONStop codeWidely reported

DPC_WATCHDOG_VIOLATION (0x133): what it means and how to fix it

By Gaurav Rawat · Updated Oct 2, 2026 · Checked against Microsoft documentation · How this page is made

Quick answer

DPC_WATCHDOG_VIOLATION means a driver took too long on work Windows expects to finish almost instantly, so Windows stopped the PC. Storage drivers and SSD firmware are the most common cause, followed by graphics and network drivers. Update those first.

What it means

Windows lets drivers do urgent, high-priority work in short bursts called deferred procedure calls (DPCs). While that work runs, almost nothing else on the CPU can, so Windows keeps a stopwatch on it, the DPC watchdog. If a single burst runs too long, or a driver hogs high priority for too long overall, the watchdog stops the system with bug check 0x133.

So this blue screen is almost never about Windows itself. It means a driver got stuck waiting on hardware, usually a storage device that didn't answer in time, or a graphics or network driver caught in a loop.

Which driver?

The blue screen sometimes names a file under What failed. If it doesn't, Windows still saves a small crash file in C:\Windows\Minidump. You don't need to read it yourself: the fixes below cover the usual suspects in order. And if the crash always happens during heavy disk activity, such as copying files or installing games, suspect storage first.

Common causes

  • An outdated storage controller driver (SATA/AHCI or RAID) or NVMe driver.
  • Old SSD firmware that occasionally stops responding.
  • A graphics, Wi-Fi or Ethernet driver stuck at high priority.
  • A recently connected device, dock or USB hub with a faulty driver.
  • A failing drive or a loose SATA cable on a desktop.

How to fix it

Safest and most likely fixes first. Readers' answers to "Did this fix it?" reorder this list over time.

  1. Update storage and chipset drivers

    First step, especially if crashes happen during heavy disk activity.

    1. Open Settings > Windows Update > Advanced options > Optional updates and install any driver updates offered.
    2. Download the latest chipset and storage drivers for your exact model from your PC or motherboard maker's support site.
    3. In Device Manager, expand Storage controllers. If you see a vendor RAID/storage driver you don't need, ask the maker's support whether the standard Microsoft controller driver is recommended.
    4. Restart and use the PC normally.
    Did this fix it?

  2. Update your SSD firmware

    If your system drive is an SSD.

    1. Open Device Manager > Disk drives and note the SSD model.
    2. Install the SSD maker's own tool from their website (Samsung Magician, Crucial Storage Executive, WD Dashboard and so on).
    3. Back up anything important, then use the tool to apply the latest firmware.
    Did this fix it?

  3. Update graphics and network drivers

    If the crash happens while gaming, streaming or on Wi-Fi.

    1. Download the latest driver from NVIDIA, AMD or Intel for your graphics card and install it.
    2. Download the latest Wi-Fi or Ethernet driver from your PC maker or the adapter maker.
    3. Restart after each install.
    Did this fix it?

  4. Unplug recently added devices

    If the crashes started after you connected new hardware.

    1. Shut down and disconnect the new device, dock or hub.
    2. Use the PC for a day. If the crashes stop, get a newer driver for that device before reconnecting it.
    Did this fix it?

  5. Remove the update that started it

    If the blue screens began right after a Windows or driver update.

    1. Open Settings > Windows Update > Update history and note what installed the day the crashes started.
    2. For a Windows update, scroll to Related settings > Uninstall updates and uninstall it.
    3. For a driver, open Device Manager, right-click the device, choose Properties > Driver > Roll Back Driver.
    4. Restart and see whether the crashes stop.
    Did this fix it?

Is it just you?

25+ Microsoft Q&A threads discuss this. Most recent activity:

Checked Oct 2, 2026. Refreshed automatically every few days.

Sources

Frequently asked questions

Is DPC_WATCHDOG_VIOLATION a hardware problem?

Usually it's a driver waiting too long on hardware. Updating drivers and SSD firmware fixes most cases, but a failing drive can cause it too.

Can an SSD cause DPC_WATCHDOG_VIOLATION?

Yes. Outdated SSD firmware or storage drivers are among the most common causes.

Why do I get DPC_WATCHDOG_VIOLATION while gaming?

Games push the graphics driver and storage hard, so a misbehaving GPU driver or slow-responding drive is more likely to trip the watchdog.

Is it safe to keep using my PC?

Back up your files first, since repeated crashes can interrupt disk writes. Then work through the fixes.

Written by

Gaurav Rawat

Gaurav Rawat is a full-stack developer from Jaipur with a B.Tech in Information Technology. At PC Decoder, he writes practical guides on Windows 11 updates, error codes, and fixes for apps that stop working after an update, with an emphasis on clear steps that actually solve the problem.

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