Does hibernation in XP depend on ACPI ? Can it work without ACPI enabled ? As far as I understand, unlike Standby (S3), hibernation does not have compatibility issue with video driver, because everything is simply saved to hd, and restored to the original memory location when powered on. So,it doesn't need any special feature in the video driver for it to work correctly. Correct me if I'm wrong. The reason I ask is because my friend's BX board with Banshee AGP doesn't wake up after hibernation. The video driver is original XP. Fyi, ACPI is turned off in this system, but APM is turned on in Bios. So unless the Banshee driver from Microsoft is not compatible for hibernation (unlikely), the only culprit I suspect is ACPI disabled. Other than that, I can't understand why it fails.