"ACPI IRQ Holder for PCI IRQ Steering" Problem Device Entry in System Information Tool

When you use the Microsoft System Information tool (Msinfo32.exe) to view problem devices in your computer, entries for "ACPI IRQ Holder for PCI IRQ Steering" may be listed. This may occur even if IRQ steering is working correctly. The entries may look like: These entries represent ACPI Holder for IRQ Steering data structures that did not start (error code 22).

This behavior can occur if you change hardware in your computer and the IRQ holder is no longer required. IRQ holders for PCI steering are listed with error code 22 when they are not in use. Although IRQ holders for PCI steering that are not in use are not displayed in Device Manager, the System Information tool displays them.

This behavior is by design.

To use the System Information tool to display problem devices in your computer:

1. Click Start, point to Programs, point to Accessories, point to System Tools, and then click System Information.
2. Double-click the Components branch to expand it, and then double-click Problem Devices.