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The BIOS in this system is not fully ACPI...
STOP: 0x000000A5
Description
The BIOS has a bug or is out of date to work with this version of Windows. The issue relates to the configuration and power interface and plug-and-play abilities of the BIOS.
Some older versions of Windows will show the description as "ACPI_BIOS_ERROR"
This is a fatal Windows error, typically called a Stop message, Bug Check, or more commonly the Blue Screen of Death (BSoD). The system is in a forced reboot state. Any unsaved work is likely lost.
Sample Screen
A problem has been detected and Windows has been shut down to prevent damage to your computer.
The BIOS in this system is not fully ACPI compliant. Please contact your system vendor for an updated BIOS.
Technical Information:
*** STOP: 0x000000A5
Beginning dump of physical memory
Physical memory dump complete.
Contact your system administrator or technical support group for further
assistance.
Text may appear differently depending on where the error occurs.
Additional technical information (hex values) specific to a machine are not shown.
Key Facts
Full Title
The BIOS in this system is not fully ACPI compliant. Please contact your system vendor for an updated BIOS.
If the BIOS is current, it's possible bad BIOS parameters are causing the problem, especially if the memory or CPU settings are overclocked. The BIOS parameters are stored in CMOS memory. The best way to reset the BIOS parameters is to remove the CMOS battery. To do this:
Unplug the PC, and open the case.
Locate the battery on the motherboard - typically a silver coin cell.
Remove the battery and note if the plus side is up or down, so you can reinstall it later the same way.
Wait at least 1 minute and reinstall the battery.
Attach power and power up. Typically a BIOS warning message will indicate CMOS was corrupted or changed and it may require you to go into the BIOS setup to set the time and date.
Proceed to boot Windows and see if this fixes the issue.
Some BIOSes have options to enable/disable caching and/or shadowing. If the options are available, disable caching and shadowing. Most newer (2005+) systems do not have these options. There are many BIOS makers and customized versions of the BIOS, so you may have to enter BIOS setup and look a bit to find these options. Typically you press a key like Esc, Del, F1, or F2 before Windows starts (almost right after you reboot) to enter BIOS setup. Consult your computer manual for details. The setup key can also be found in our BIOS access list.
The Advanced Configuration and Power Interface (ACPI) BIOS of the computer is not fully compliant with the ACPI specification.
After the Stop code will be 4 hex values: {Parameter 1, Parameter 2, Parameter 3, Parameter 4}.
Parameter 1 specifies type of incompatibility (other Parameters will depend upon this value too).
Value
The BIOS incompatibility related to Plug and Play (PnP) or power management
0x00000001
ACPI cannot find the System Control Interrupt (SCI) vector in the resources that are handed to it when ACPI is started.
0x00000002
The ACPI BIOS could not process the resource list for the PCI root buses.
0x00000003
ACPI tried to run a control method while creating device extensions to represent the ACPI namespace, but this control method failed.
0x00000004
ACPI evaluated a _PRW and expected to find an integer as a package element.
0x00000005
ACPI evaluated a _PRW, and the package that came back failed to contain at least two elements. The ACPI specification requires that two elements always be present in a _PRW.
0x00000006
ACPI tried to find a named object, but it could not find the object.
0x00000007
ACPI evaluated a method and expected to receive a buffer in return. However, the method returned some other data type.
0x00000008
ACPI evaluated a method and expected to receive an integer in return. However, the method returned some other data type.
0x00000009
ACPI evaluated a method and expected to receive a package in return. However, the method returned some other data type.
0x0000000A
ACPI evaluated a method and expected to receive a string in return. However, the method returned some other data typ
0x0000000B
ACPI cannot find the object that an _EJD string references.
0x0000000C
ACPI provides faulty or insufficient information for dock support.
0x0000000D
ACPI could not find a required method or object in the namespace This bug check code is used if there is no _HID or _ADR present.
0x0000000E
ACPI could not find a required method or object in the namespace for a power resource (or entity other than a "device"). This bug check code is used if there is no _ON, _OFF, or _STA present for a power resource.
0x0000000F
ACPI could not parse the resource descriptor.
0x00000010
The ACPI BIOS could not determine the system-to-device-state mapping correctly.
0x00000011
The system could not enter ACPI mode.
0x00000014
ACPI could not parse the resource descriptor. The length exceeds MAXULONG.
0x00000015
ACPI had a fatal error when attempting to load a table.
0x00000016
ACPI had a fatal error when processing an xSDT. An object was declared as a child of a parent that cannot have children.
Value
When an interrupt routing failure or incompatibility has occurred
0x00002001
ACPI tried to evaluate the PIC control method but failed.
0x00010001
ACPI tried to do interrupt routing, but failed.
0x00010002
ACPI could not find the link node referenced in a _PRT.
0x00010003
ACPI could not find a mapping in the _PRT package for a device.
0x00010005
ACPI found an entry in the _PRT that the function ID is not all F's for.
0x00010006
ACPI found a link node, but it cannot disable the node.
0x00010007
The _PRT contained a reference to a vector that is not described in the I/O APIC entry's MAPIC table.
0x00010008
The ACPI SCI interrupt level is invalid.
0x00010009
The Fixed ACPI Description Table (FADT) could not be located.
0x0001000A
The Root System Description Pointer (RSDP) or Extended System Description Table (XSDT) could not be located.
0x0001000B
The length of the ACPI table is not consistent with the table revision.
0x00020000
The PM_TMR_BLK entry in the Fixed ACPI Description Table doesn't point to a working ACPI timer block. If a miscellaneous failure or incompatibility has occurred, then the PM_TMR_BLK entry in the Fixed ACPI Description Table does not point to a working ACPI timer block.
While BSoD fatal stop errors are identified by Microsoft Windows, they are often caused by
non-Microsoft applications, drivers and hardware issues.
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Notes
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