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ACPI BIOS is attempting to read from an illegal IO port address (0x71), which lies in the 0x70 - 0x71 protected address range. This could lead to system instability. Please contact your system vendor for technical assistance.
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|Concepts to understand:|
What is ACPI?
What is an I/O port?
I resolved this issue by flashing my BIOS. Upon successful flash, the error ended.
As per Microsoft: "The system BIOS attempted to incorrectly access hardware resources concurrently with the operating system. This type of access cannot be synchronized and can cause system instability". See MSW2KDB for additional information about this event.
To resolve this issue, contact your computer manufacturer or the BIOS vendor for possible updates to your computer BIOS. See ME317513 for more details.
Disable "memory shadow" option in motherboard BIOS.
May be resolved by a BIOS update, but in my case it did not stop the errors. It is safe to leave as it is just the OS stopping the motherboard's built in ACPI from accessing a certain port. This apparently improves system stability. See ME283649.
This is a bios design defect. Make sure you have latest bios for your motherboard. See "I/O Ports Blocked from BIOS AML on Windows XP"
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|Links: ME283649, ME317513, I/O Ports Blocked from BIOS AML on Windows XP, MSW2KDB|
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