Manual
Page 34
... mode when you install 64-bit Windows 7/Vista. select 64-bit mode when you install 32-bit Windows 7/Vista; S1(POS) Enables the system to RAM) sleep state (default). S3(STR) Enables the system to enter the ACPI S3 (Suspend to enter the ACPI S1 (Power on the system. Disabled Disables...
... mode when you install 64-bit Windows 7/Vista. select 64-bit mode when you install 32-bit Windows 7/Vista; S1(POS) Enables the system to RAM) sleep state (default). S3(STR) Enables the system to enter the ACPI S3 (Suspend to enter the ACPI S1 (Power on the system. Disabled Disables...