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Windows 7: System lockup with acpi error

15 Feb 2009   #1

Windows 7
System lockup with acpi error

Every so often I get a complete system lock with this message in event viewer:
ACPI: ACPI BIOS is attempting to write to an illegal PCI Operation Region (0xc), Please contact your system vendor for technical assistance.

I have seen it with several windows open or nothing running at all.
I am running Window 7 Beta 64bit, an HP XW8400, with a quad core xeon and 8GB of ram, with the lastest bios. I have turned off all power management options and it is still locking up.


My System SpecsSystem Spec

17 Feb 2009   #2


Hey on my xw8400 I got the same issue. No lockups though. I am on vista 64 bit business this started happening after the bios update. version 2.35.
You should contact hp and let them know about your problem
it may help resolve the situation

My System SpecsSystem Spec

 System lockup with acpi error

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