While its name hints that the ACPI 2.0 Support BIOS feature is a toggle to enable ACPI 2.0 features, this is not the case. Find out what ACPI 2.0 Support does, and what you should set it to!"
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips