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Thread ID: 20528	2002-06-07 07:41:00	Help needed	Guest (0)	Press F1

Post ID	Timestamp	Content	User
52934	2002-06-07 07:41:00	I need help with error messages that appear in the error log of windows xp. every day there is a hell of a lot of error messages containing the following text. AMLI: 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. AMLI: 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. AMLI: ACPI BIOS is attempting to write to an illegal IO port address (0xcf8), which lies in the 0xcf8 - 0xcff protected address range. This could lead to system instability. Please contact your system vendor for technical assistance. AMLI: ACPI BIOS is attempting to read from an illegal IO port address (0xcfc), which lies in the 0xcf8 - 0xcff protected address range. This could lead to system instability. Please contact your system vendor for technical assistance. Does anybody know whats going on or have a suggestion of where I could find out what is wrong? My computer stats are as follows. XP home duron 1.2GHz chaintech motherboard 256MB RAM 40 gig HD If you need to know anything else just ask.	Guest (0)
52935	2002-06-07 07:57:00	The first two are surely not 'errors': it is quite normal for the BIOS to look up (read) the CMOS settings. That's what is accessed through 0x70 and 0x71. You write the address within the CMOS ram to port 0x70, then read port 0x71. So why isn't it complaining about the write? I don't know offhand what is at 0x0cf8-0cff ... But if the system is coughing copiously, perhaps a virus check might be in order.	Guest (0)
52936	2002-06-07 08:02:00	This may help.... CAUSE This behavior can occur if your computer's basic input/output system (BIOS) attempts to write to a port in AML [Advanced Configuration and Power Interface (ACPI) Machine Language]. This attempt causes Microsoft Windows XP to prevent any access to that port. This feature has been designed to improve the stability of your computer's operating system. STATUS This behavior is by design. Contact the BIOS vendor for a possible BIOS update. For more information see: www.microsoft.com tj	Guest (0)
52937	2002-06-07 08:14:00	Graham, I made a mistake when posting that second message should state. AMLI: ACPI BIOS is attempting to write to an illegal IO port address (0x70), which lies in the 0x70 - 0x71 protected address range. This could lead to system instability. Please contact your system vendor for technical assistance.	Guest (0)
52938	2002-06-07 08:18:00	If it is designed to happen, you must have done something to trigger it off. Perhaps installing Windows XP? If it has been happening ever since XP was installed, then you *might* need to upgrade the BIOS. This is a non-trivial thing to do. If you are not *certain* that you know how to do it, don't do it. If you did something, perhaps changing the Power management settings, can you change it back?	Guest (0)
52939	2002-06-07 08:42:00	It has been happening ever since I have had it. It's a PC from the PC Company. I have learnt my lesson, have had so many troubles with them.	Guest (0)
52940	2002-06-07 10:25:00	Sam, here's some info from Microsoft Knowledge Base article Q283649. looks like you may need a BIOS update from your mobo maker. Cheers, Babe. <support.microsoft.com Error Message: ACPI BIOS Is Attempting to Write to Illegal IO Port Address (0x80, 0x400, 0xcf8, 0xcfc) (Q283649) -------------------------------------------------------------------------------- The information in this article applies to: Microsoft Windows XP Professional Microsoft Windows XP Home Edition -------------------------------------------------------------------------------- SYMPTOMS The following error message(s) may be in Event Viewer: Source: ACPI Category: None Type: Error Event ID: 12 User: N/A Computer: Machine_Name Description: AMLI: ACPI BIOS is attempting to create an illegal memory OpRegion, starting at address 0x400, with a length of 0x100. This region lies in the Operating system's protected memory address range (0x0 - 0x9fc00). This could lead to system instability. Please contact your system vendor for technical assistance. For more information, see Help and Support Center at: go.microsoft.com Source: ACPI Category: None Type: Error Event ID: 5 User: N/A Computer: Machine_Name Description: AMLI: ACPI BIOS is attempting to write to an illegal IO port address (0xcf8), which lies in the 0xcf8 - 0xcff protected address range. This could lead to system instability. Please contact your system vendor for technical assistance. For more information, see Help and Support Center at: go.microsoft.com Source: ACPI Category: None Type: Error Event ID: 4 User: N/A Computer: Thunderbird Description: AMLI: ACPI BIOS is attempting to read from an illegal IO port address (0xcfc), which lies in the 0xcf8 - 0xcff protected address range. This could lead to system instability. Please contact your system vendor for technical assistance. For more information, see Help and Support Center at: go.microsoft.com CAUSE This behavior can occur if your computer's basic input/output system (BIOS) attempts to write to a port in AML [Advanced Configuration and Power Interface (ACPI) Machine Language]. This attempt causes Microsoft Windows XP to prevent any access to that port. This feature has been designed to improve the stability of your computer's operating system. STATUS This behavior is by design. Contact the BIOS vendor for a possible BIOS update. For more information see: www.microsoft.com	Guest (0)
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