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Blue screen

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Can anyone help me with this problem?


Blue screen message:  Stop 0x000000D1  DRIVER_IRQL_NOT_OR_EQUAL


Stop 0x000000D1 (0x00000018, 0x00000002, 0x00000000, 0xB9E4525F)


iastor.sys - Address B9E4525F - Base at B9E36000 - Datestamp 42B2DF42.


I've looked through drivers in device manager but there doesn't seem to be any conflicts. But i've updated a number of drivers using driveragent (which wasn't easy by the way).


I can restart the pc each time and complete several functions b4 another crash...which can happen suddenly for no apparant reason.


I,m using windows xp media edition with avast antivirus which tells me all is ok.


Any ideas would be much appreciated.



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What about your security software, you've updated the drivers while Avast Antivirus was installed?


I can't use Avast Antivirus because of a DRM protection driver on my system for a professional software that's installed which makes my system unbootable, so you may wish to see if removing Avast for several hours cures the problem or not. You may also want to look into the firewall you're using if it isn't the default Windows Firewall, I know from personal experience that some 3rd party software firewalls don't like it when drivers are changed, updated, etc.



* You may also want to run the System File Checker for your build of Windows.

* Then again your problem could also be caused by failing hardware.

Edited by Andavari

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Minidump(s) would be nice, but from the crashing driver/file (iastor.sys) I'd say faulty AHCI/storage driver or faulty HDD/SSD (hardware).

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