what is acpi.sys used for
ACPI Driver for NT. The file acpi.sys is used to launch ACPI Driver for NT for SCSI Port Driver scsiport.sys and ATAPI Driver Extension ataport.sys, and support device drivers in computer Gateway. The acpi.sys driver was published at 7/13/2009 4:19:35 PM, and has location C:\Windows\System32\Driver\acpi.sys\.