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Published on 01.06.10 by Brent Trahan

Troubleshooting a Stop 0xA or IRQ_NOT_LESS_OR_EQUAL

Learn how to troubleshoot the 0xA or IRQ_NOT_LESS_OR_EQUAL Stop Error (BSOD) in Windows 7.

What caused the error?

This Stop Error is typically caused by faulty or incompatible hardware or software.

How do I fix it?

  • Try restoring the computer to it’s Last Known Good Configuration.
  • Check the System Log for error messages about any incompatible device drivers, system services, virus scanner, or backup tool.  If a device driver is causing the problem, try rolling the drivers back or uninstalling them.  If a system service, virus scanner, or backup tool is causing the problem, try updating it or uninstall it all together.
  • Disable memory caching in the BIOS.  See the computer manufacturer’s manual for help with this.
  • Run hardware diagnostics supplied with your computer.  If you don’t have any, try running the memory scanner supplied with Windows 7.
  • Make sure the latest Service Pack has been installed.
  • If your computer has a SCSI interface, try updating the drivers, disabling sync negotiation in the SCSI BIOS, and check the SCSI cabling for proper termination.
  • If your computer has IDE devices, define the onboard IDE port as primary only.  Also, check each IDE device for the proper master/slave settings.
  • If this error occurred while upgrading to Windows 7, the problem is probably due to an incompatible driver, system service, virus scanner, or backup tool.
  • If this error occurs when resuming from hibernation see KB articles 941492 and 945577.
  • If this error occurs when starting a mobile computer while the lid is closed see KB article 941507.

Still need help? Ask your computer question now.

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