Acpi error in event viewer

Data saved in the hard drive becomes inaccessible after you encounter a Acpi error message in event viewer. In such situations, in case of absence of an up-to-date backup, you need to use powerful data recovery software. Few main Acpi error messages in event viewer are:

Error Message: ERROR AMLI: ACPI BIOS is attempting to write to an illegal IO port address (0x70), which lies in the 0x70-0x71 protected address range. This machine has suffered a fatal error and needs to be shutdown as quickly as possible.

Reasons:

System ROM is not updated

Simultaneous I/O read/write operations are attempted

Error Message: 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 (0xnnnn), which lies in the 0xXXXX - 0xYYYY protected address range. This could lead to system instability. Please contact your system vendor for technical assistance.

Reasons:

Computer's basic input/output system (BIOS) tries to write to one of the earlier ports by using an AML [Advanced Configuration and Power Interface (ACPI) Machine Language] System IO operation region

Error Message: IRQARB: ACPI BIOS does not contain an IRQ for the device in PCI slot 4, function 0. Please contact your system vendor for technical assistance.

Reasons:

This error message may occur on a computer that uses a Peripheral Component Interconnect (PCI) bridge that supports message-signaled interrupts but does not support line-based interrupts.

Few Measures after Acpi error in event viewer

Update your system ROM to resolve the issue

Contact the BIOS vendor for a possible BIOS update

However, if all the above measures fail to resolve the Acpi error in event viewer and your data still remains inaccessible, then use Stellar Phoenix Windows Data Recovery software. This is powerful and user-friendly data recovery application recovers data after all the above Acpi error messages. Designed for Windows 7 RC1, Vista, XP, 2003 and 2000, this read only data recovery application supports email recovery from DBX and PST files. Built with highly graphical user-interface, the software recovers data from deleted, damaged, or formatted FAT, FAT16, FAT32, NTFS and NTFS5 hard drive partitions.