What is 0x00000133?
DPC_WATCHDOG_VIOLATION (0x00000133) is a critical-severity fault affecting the Windows operating system. A deferred procedure call (DPC) routine took too long and crashed the system. Reports of DPC_WATCHDOG_VIOLATION usually describe a sudden crash, brief unresponsiveness, or a stop-code screen appearing out of nowhere. Typical causes include bad SSD/SATA controller driver, incompatible disk firmware and graphics driver error. The steps below are ordered to resolve this efficiently.
Common Causes
- Bad SSD/SATA controller driver
- Incompatible disk firmware
- Graphics driver error
Step-by-Step Fix Guide
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1
Update the iastor.sys driver to the standard SATA AHCI driver from Microsoft
Update the iastor.sys driver to the standard SATA AHCI driver from Microsoft tends to be the quickest win here, addressing the most typical cause of 0x00000133.
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2
Update the SSD firmware
For cases that don't clear up right away, the remaining steps target less typical windows instability problems.
Commands & Diagnostics
devmgmt.msc
sfc /scannow
Frequently Asked Questions
In most cases, bad SSD/SATA controller driver is behind 0x00000133. Incompatible disk firmware and graphics driver error can trigger it too.
Most 0x00000133 reports resolve after "Update the iastor.sys driver to the standard SATA AHCI driver from Microsoft". The rest of the guide above is there for the cases that don't.
Yes — 0x00000133 is a critical-severity error and can lead to data loss or hardware damage if it's ignored. Don't put off the fix steps above.
In most cases, yes — the guide above resolves 0x00000133 without a clean install. Treat a reinstall as the last resort, not the first move.
Sometimes. Microsoft regularly releases patches that fix known BSOD triggers including 0x00000133. Make sure Windows is fully up to date via Settings → Windows Update before attempting more advanced fixes.
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