Windows & BSOD · critical

How to fixKERNEL_AUTO_BOOST_LOCK_ACQUISITION_WITH_RAISED_IRQL

Kernel auto boost lock IRQL error

What this error means

Kernel auto boost lock IRQL error (KERNEL_AUTO_BOOST_LOCK_ACQUISITION_WITH_RAISED_IRQL) is a critical-severity fault affecting the Windows operating system. This BSOD occurs when a driver attempts to acquire a kernel auto-boost lock while operating at an elevated IRQL (Interrupt Request Level). This violates Windows kernel locking rules. The error is almost exclusively caused by a buggy third-party driver — particularly security software, antivirus kernel drivers, or gaming anti-cheat systems that hook into kernel lock primitives. The steps below are ordered to resolve this efficiently.

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Uninstall recently installed security software
  1. Uninstall recently installed security software
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
02Update or uninstall gaming anti-cheat software
  1. Update or uninstall gaming anti-cheat software
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Check minidump in WinDbg to identify faulting driver
  1. Check minidump in WinDbg to identify faulting driver
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Buggy antivirus kernel driver
  • Gaming anti-cheat kernel driver conflict
  • Outdated system driver using deprecated locking APIs