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On hardware platforms which have an ACPI BIOS, the HAL triggers Acpi.sys to be loaded for the duration of system startup at The bottom of the gadget tree. Acpi.sys functions as the interface amongst the functioning website method along with the ACPI BIOS. Acpi.sys is transparent to one other drivers while in the gadget tree.
Electrical power administration. Among the first functions of ACPI is to manage electric power use throughout numerous products connected to a computer process.}