Older versions of OS don’t support x2APIC. If the version of your OS doesn’t support x2APIC and you are using Westmere-EX CPUs, in “Local APIC Mode” selections of BIOS setup, please select “Compatible APIC Mode.” The default setting is “Auto” and is for the versions of OS that support x2APIC.
FAQ ID:
12902
Related Category / Keyword:
BIOS:
AMI BIOS
Operating Systems:
Linux OSOther Operating SystemsWindows 2000 / Windows NTWindows 2008Windows 7Windows 98 / Windows 95Windows Server 2003 / Windows XPWindows Vista