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Error code 000000A5

Error code


This problem is caused by the BIOS not being fully Advanced Configuration and Power Interface (ACPI) compliant. Contact the motherboard manufacturer to get a BIOS update.

If the problem occurs while trying to install Windows 2000 or Windows XP, you can turn off ACPI mode during text-mode setup. To do this press F7 when you see the "Press F6 if you need to install a third-party SCSI or RAID driver" screen. The system will not notify you that the F7 key was pressed, but it will silently disable ACPI and allow you to continue your installation.

This problem can also appear if you add more RAM to the computer while the computer is in hibernation. When the computer resumes from hibernation it will show this Stop message. See M831691 for details on this issue.
If the problem appears when you dock a Microsoft Windows 2000-based portable computer to a docking station while the computer is running, see M840172 for a hotfix.

Additional information on this problem can be found in M256841, M314830, “Windows DDK”, and "Recovering from Hardware-related Problems".


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