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Windows 7: driver irql not less or equal

18 Jun 2011   #11

Windows 7 Home Premium 64 bit

This issue can be caused by a conflict with the Onboard audio controller on your new Nvidia card and your Motherboard audio.
You can try the following uninstall method which will fully disable the audio and should help eliminate the issues you experience.
1. go into device manager- In the Display adapers area right click on the 400/500 series card, and select "properties" this will give you a listing such as "PCI Bus 3, device 0, function 0" If using multiple cards please check and note each listing.

2. go under system devices, you will see HD audio devices.. check them to see which one matches your GTX 400 series pci bus
location. disable (not uninstall) the one that matches your 400/500 series card.

3. check under sound devices and it should no longer be there (this step might or might not require a restart)
If there are still issues the drivers may need a clean install in order to function properly. This can be done by running the latest driver package and choosing "Custom installation" and check the box labeled "Perform Clean install" which will remove previous drivers and performa a clean install.

Trying this, its directly from EVGA website even i have asus it should do the job.

My System SpecsSystem Spec
22 Jun 2011   #12

Windows 7 Home Premium 64 bit

2 days and new bsods
My System SpecsSystem Spec

 driver irql not less or equal

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