Why ACPIScope displays message "ACPI driver is not started"

Why ACPIScope displays message "ACPI driver is not started"
Explanation:	The message is displayed when ACPIScope driver is unable to retrieve AML namespace.
Solution:	Please check if your computer is using ACPI version of HAL. Check if Device Manager displays "Microsoft ACPI-Compliant System" under "System Devices" tree. If yes, please open device properties and switch to "Details" tab. Please check "Device Instance Id". The ACPI compliant system should have Device Instance Id equal to ACPI_HAL\PNP0C08\0.

Explanation:

The message is displayed when ACPIScope driver is unable to retrieve AML namespace.

Solution:

Please check if your computer is using ACPI version of HAL. Check if Device Manager displays "Microsoft ACPI-Compliant System" under "System Devices" tree.

If yes, please open device properties and switch to "Details" tab. Please check "Device Instance Id". The ACPI compliant system should have Device Instance Id equal to

ACPI_HAL\PNP0C08\0.