Biostar U8668 U8668 BIOS setup guide - Page 26

BIOS Setup PWRON After PWR-Fail This field determines the action the system will automatically take when power is restored to a system that had lost power previously without any subsequent manual intervention. There are 3 sources that provide current to the CMOS area that retains these Power-On instructions; the motherboard battery (3V), the Power Supply (5VSB), and the Power Supply (3.3V). While AC is not supplying power, the motherboard uses the motherboard battery (3V). If AC power is supplied and the Power Supply is not turned on, 5VSB from the Power Supply is used. When the Power Supply is eventually turned on 3.3V from the Power Supply will be used. There are 3 options: "Former-Sts", "On", "Off". "Off" (default) Means always set CMOS to the "Off" status when AC power is lost. "On" Means always set CMOS to the "On" status when AC power is lost "Former-Sts" Means to maintain the last status of the CMOS when AC power is lost. For example: If set to "Former-Sts" and AC power is lost when system is live, then after AC power is restored, the system will automatically power on. If AC power is lost when system is not live, system will remain powered off. IRQ/Event Activity Detect If you highlight the literal "Press Enter" next to the "IRQ/Event Activity Detect" label and then press the enter key, it will take you a submenu with the following options: VGA When set to On, any event occurring at a VGA Port will awaken a system which has been powered down. The Choices: Off (default), On. LPT & COM When this option is set to On, any event occurring at a COM(serial)/LPT (printer) port will awaken a system which has been powered down. The Choices: LPT/COM (default), COM, LPT, NONE. - 25 -