Fix BSOD: Find IRQ conflicts on Windows 7

Windows Bsod Irq Conflict Recently I ran into some odd blue screens that usually occurred on Windows XP, DRIVER_IRQL_LESS_OR_EQUAL

In this guide I’ll explain how to find shared IRQ’s and possible IRQ conflicts

1. Step Hit Windows key + R on your keyboard

2. Step Enter msinfo32.exe and hit Enter

Msinfo System Irql Conflicts

3. Step Next, uncollapse Hardware Resources and click on Conflicts/Sharing

Hardware Resources Conflicts Sharing

4. Step As you can see below on my PC IRQ 19 is shared by the audio controller and the raid controller. Under normal circumstances this shouldn’t cause any problems, however my motherboard is known for audio controller problems and I frequently have audio issues.

My motherboard is the Asus m4a89gtd pro/usb3 – if you have audio problems, this could be a possible indicator that something is wrong

High Definition Audio Controller Irql Conflict


Open DMP Files And Unplug Devices

Alright, next on the list we should try to open any dump files

In order to fix any problems also work through this checklist:

  • Unplug external devices and drives
  • Switch headset
  • Unplug everything except mouse,keyboard,monitor
  • When using multiple monitors disconnect all except one and see if problems persists
  • Remove the USB root hub from your device manager
  • Download new chipset and audio controller drivers
  • Download Realtek drivers


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- Cheers!

Written by:
Oliver is the founder and lead editor of this site. He is interested in finding new ways to break Windows, find common errors and help others to fix them. Aside from that, he loves to fully customize systems with Rainmeter and Dreamscene, find out more about ancient civilizations like the Chachapoya, sharpen his digital photography skills and create software with a small group of selected developers. If you would like to connect with him to discuss anything, send him a mail!

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